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The contents and subject scope of the peer-reviewed bibliographic database Library Information Systems and Innovations in Digital Environment, LIS), based in IRBIS64 software are characterized in brief. The proportion of source document types and bibliographic records is identified. Science and scientific and practical journals prove to be the major source for the bibliographic array, while the share of other source types is relatively small. The major sources of information, or the core journals within the LIS database subject scope are revealed. Based on the LIS databases contents, the parallel is drawn with Bradford scattering law which states that if journals in a field are sorted by number of articles into three groups, each with about one-third of all articles, then the number of publications in specialized journals will make the one-third, the other one third will be published in the related journals and the other will be distributed between in a vast number of science periodicals unpredictable for the said subject scope. The author establishes that the qualitative and typical composition of the LIS database bibliographic array is in full accord withBradford’s law.

The problem of the comparative assessment of the scientific journals for the selection journal for publication of the papers of Russian scientists in the journals, included in database Web of Science (WOS), with consideration of their thematic discusses, and methodology for the solution of this problem suggests in the presented article. It applies for the specific subject category WOS and takes into consideration impact factor of the journal, number of the papers of Russian scientists, published in this journal in the previous years, average citations of these papers and their relative citations for the analysis of the list of journals of this subject category.The analysis of applicability of the suggested methodology has been implemented for the subject category of WOS mathematical&computational biology. A ranked list of journals, recommended for the publication of Russian scientists articles, has been achieved. The sustainability of this list for the different times intervals has been shown.As it has been concluded, suggested methodology may be applied for the journals of another subject categories WOS and can be useful for the Russian scientists, publishing their articles in the journals from WOS journals list. An applicability of the Bradford’s law for the porpoise of this analysis has been shown also.

An attempt has been made to analyze the scholarly publications of Plagiarism as reflected through web of science in global wise. The study covers in different variables such as sources, year wise, top 10 authors, and top 25 institutions, top 25 country wise, top 20 journals and top 25 keyword wise distribution of contributions. The Time span is for the year between 2010 and 2014 which is limited only recent five years only. The findings of the study reveal that the majority of 442 (55.8%) scientific publications have been published in scholarly journals. The maximum number of articles were published in 2013 and the lowest number i.e. 130 (16.4%) of research papers were published in 2010. The TLCS and TGCS are increased in the year 2010 and gradually it has been decreased in the year 2014. It is noticed that the share of publications output by Indian authors is 16 articles i.e. 2.07% of 776 papers published by authors from all over the world in different journals of 5 years.

The purpose of this paper was to provide useful indicators for library LIS collection development in order to better serve its user community. Core journals utilized by LIS academic researchers in Sri Lanka were identified via the application of Bradford’s law of scattering to the Journal of the University Librarians Association (JULA) of Sri Lanka. This study analyzes 46 articles containing 803 citations, published in the open access Journal of the University Librarians Association (JULA) during 2010-2015. The most cited format was determined, and a ranked list of core journals was prepared employing the Bradford’s law. Journals were revealed to be the most frequently cited format, which accounted for 51.31% of all citations. Data sets were fit with the Leimkuhler model of the Bradford’s law. Thirteen journals were identified as belonging to the most productive nucleus of journals cited by articles in the Journal of the University Librarians Association (JULA). In the ranked list of core journals, “The Journal of Academic Librarianship” was ranked as first. The chronological distribution of cited material revealed that LIS researchers had mostly used materials published within 2001-2010 time period. Further, the categorization of articles into subject domains within LIS showed that most studies were conducted within the field of “information seeking”. This paper provides useful insights for librarians in LIS collection development of libraries in Sri Lanka.

An attempt has been made in this paper to identify the research productivity on the bibliometrics subject published from 2013 to 2017 in the Web of Science database. 1422 research articles on bibliometrics published in various library science journals and indexed in the web of science database are considered as a basis of data for the study. In this article, we made an attempt to analyze the pattern of publication of 1422 research articles. The study involved on various bibliometric components such as annual growth rate, authorship pattern, distribution of contribution by country wise, language-wise, institution wise, most prolific author in the field, high productivity of Journals, etc is studied. On an average 284 articles were published in each year during the study period and the highest number of articles are recorded in the year 2016. Further, the USA is contributed to the highest number of research articles (22.2%). The journal “scientometric” ranks as the first core journals in the subject of library science by contributing 37% of the total publications. Finally, the study concluded that there has been consistent growth of literature in the field of bibliometric studies and also given data set well fitted with the Bradford law of scattering of literature.

The study finds the research output of Biochemistry teachers in ‘North Eastern Hill University (NEHU)’ using bibliometric methods. It identifies the core journal in this field. The study sample comprises 11 faculty members from Biochemistry Department and the papers published by them during the period 2000 to 2010. The papers were collected from NEHU institutional repository, Developing Library Network (DELNET) via Document Delivery Service (DDS) and also from ‘Web of Science (WoS)’ database. A total of 434 journals containing 1574 references were collected, MS-Excel spreadsheet and MS-Word were used to analyze the data. There has been no study done on this aspect of faculty members from Biochemistry in NEHU. This is first of its kind study done in NEHU. The growth of literature on Biochemistry, the analysis of data showed that the nature of growth is not consistent as the number of publications varies in nature. To identification the core journals Bradford’s law was used and according to Bradford’s law o...

Purpose – The purpose of this paper was to check the validity of Bradford’s Law in the contemporary world of academic electronic mailing lists. Design/methodology/approach – The present research study applied Bradford’s Law to academic electronic mailing lists to determine: whether, on the Internet, mailing lists and the posts sent to them follow the same distribution as scientific journals and the articles published in them with respect to the original form of Bradford’s Law; and whether the behaviour of the Bradford distributions differs depending on the type of academic discipline (social studies or sciences) and subject category (documentation and education, medicine and life sciences) to which the list belongs. As a prior step, the utility of mailing lists was analysed during the 10-year period of 2002-2011, together with their expected future in terms of ratifying the applicability of the Law. Findings – The results showed that, in general, electronic mailing lists are continuing to be used, and that Bradford’s Law is indeed satisfied, especially in the science subject categories, coherent with the fact that Bradford’s Law in cybermetrics holds only for fairly narrow (closed) and well-defined (homogeneous) environments. Originality/value – The originality of the present research study was to check the validity of the historic Bradford’s Law in the contemporary world of Internet.

Museum studies, is the study of museums, museum curation, and how and why museums developed into their institutional role in education and culture through scientific, social, political and other related forces. The purpose of this study is to shed light on the application trends of the international literature related to museum studies on the SCIE, SSCI, and AHCI databases between 1995 and 2014 using a bibliometric technique and citation analysis. The results of this study reveal that influences of the literature related to museum studies on other subject areas continue to expand. Considering the publication of major countries, subject areas, journal and institutions, the results also discussed that the future trend through analysing most cited articles. Moreover, 12 core journal lists are identified by Bradford’s law.

Purpose – This study aims to make recommendations for library collection development because undergraduates expect to satisfy their information need for research activities through library collection. Therefore librarian should assess whether the library is adequately responding their research demands. This can be answered by analyzing citations in the dissertations. Design/methodology/approach – The study analyzed 8,224 citations from 204 undergraduate dissertations submitted to the Faculty of Agriculture, University of Peradeniya, Sri Lanka, in 2012. The most cited format was determined. Bradford’s law was applied to prepare a ranked list of journals. Accessibility of each core journals was observed and recommendations were made for collection development. Findings – Journals were the most cited format. Data sets were fit with either the verbal formula or mathematical formula of the Bradford’s law. Core journals were determined. Core journals were accessible via number of ways. Some journals are subscribed by the Agriculture or via databases through UGC consortia (through University of Peradeniya’s library network) or open access journals. There are several journals in which the free access is available through Sri Lanka Journals OnLine. Based on the results, recommendations were made for collection development. Originality/value – The paper provides useful insight for collection development for research demand, Agriculture Library, University of Peradeniya, Sri Lanka.

The present study is citation analysis of Business Research. It covers 18 issues of 9 volumes of Business Research published bi-annually during the period 2008-2016. The analysis covers the study of citation pattern and chronological growth citations. It also covers authorship pattern of the articles and various information sources of cited material. On the basis of citation analysis, a rank list of journals is prepared and core journals in the field of Business research are identified. Similarly, core areas of research are identified. The study reveals that researchers have cited journals (77.33%) more than books, editorial works and all other sources of information. Growth in collaborative trend of writing papers is also noticed as citations contributed by two authors is (37.67%) and single authors is (33.42%) followed by three authors (21.59%). Half-life of journal’s citations is found to be fourteen years. Bradford’s law doesn’t found fit in the study. Academy of Management Journal (157 citations), Strategic Management Journal (141 citations) and The Journal of Finance (136 citations) are the most cited journals. Supply chain management and advertising are the two main areas of research among researchers.

The paper presents a bibliometric analysis of the 4821 cited documents appended to the 295 articles published in DJLIT during 2011-15. The citation analysis is based on various strictures such as studying distribution of citations, authorship pattern, degree of collaboration, distribution of reference sources, prominent authors and ranked list of core journals. The study revealed that there is dominance of single authorship with 1912 (39.65%) citations followed by two authors with 1152 (23.89%) citations, three authors with 456 (9.45%) citations and more than three authors with 386 (8%) citations. There has been the availability of a good degree of institutional publications as well. Year-wise authorship pattern is also specified so as to see the dominance of particular authorship pattern for the period considered under the study. The degree of authors’ collaboration for the present study is 0.51 and modified collaborative coefficient is 0.3661. Dr B.M. Gupta with 52 citations is the most prolific author. Dr K.C. Garg and Dr B.S. Kademani are at the second and third position respectively. The study further exposed the journal to be the mostly cited information source 2560 (53.10%) followed by websites (22.69%) and books (10.81%). Conference papers, reports, theses, workshop papers and seminar papers equally seem to be preferred domain with regard to using pertinent information source. Ranked list of journals denotes Scientometrics to be the most used journal (6.60%) by the authors contributing in DJLIT. The source journal is at the second position in the ranked list with 5.43%. A glance at the ranked core list of journals suggests that maximum journals are from foreign countries.

This presents a comparative analysis of three large, multi-disciplinary citation indexes. It starts with a presentation of the basic principles of the Science Citation Index (SCI, later Thomson Reuters’ Web of Science), a multi-disciplinary citation index created by Eugene Garfield in the early 1960s. Next, it presents a study conducted in 2009 comparing the Web of Science with Scopus, a comprehensive citation index launched by Elsevier in 2004, and a recent study comparing Scopus with an even more comprehensive citation index, Google Scholar, also launched in 2004.

This paper attempts to highlight quantitatively and qualitatively the growth and development of world literature on materials science in terms of publication output and citations as per Web of Science (2006---2010). The objective of the study was to perform a scientometric analysis of all materials science research publications in the world. The parameters studied include growth of publications and citations, continent-wise distribution of publications and citations, country-wise distribution of publications, domain-wise distribution of publications and citations, publication efficiency index, distribution of publications and citations according to number of collaborating countries, variation of mean impact factor in materials science domains, identification of highly cited publications and highly preferred journals, quality of research output and application of Bradford's law.

PurposeThis paper aims to explore the effective ways to utilize current awareness services (CAS) for library and information science (LIS) professionals. It seeks to identify core journals for systems librarianship based on Bradford analysis.Design/methodology/approachThe study explored the methods for CAS based on literature review, followed by Bradford analysis of systems librarianship literature, which was conducted by the quantitative analysis approach.FindingsA core journal list for systems librarianship was built based on Bradford analysis. Three effective ways to utilize CAS by table of contents (TOCs) alerts were identified.Originality/valueTo keep up to date with the latest literature in the field of interest, LIS professionals should take advantage of CAS. The study found three effective ways to utilize CAS by TOCs alerts and identified core journals for systems librarianship. The research can help LIS professionals efficiently navigate the information tsunami to obtain the reliable and relevant information that deserves their time and attention, and stay aware of new developments in their area of interest.

Bradford's Law of Scattering is a law of diminishing returns and scattering. Bradford formulated the law in 1948 and claimed that for a given subject area “there are a few very productive periodicals, a larger number of more moderate producers, and a still larger number of constantly diminishing productivity” [1]. For any single issue, or subject area, the top third (Zone 1 or core) represents the journals that are the most frequently cited in the literature of that subject and that are, therefore, likely to be of highest interest to researchers in the discipline. The middle third (Zone 2) includes the journals that have had an average amount of citations, and the bottom third (Zone 3 or tail) comprises the long tail of journals that are seldom cited and regarded as of marginal importance to the subject [2]. Researchers have defined a subject area in lexical, semantic, and subject scattering terms [3], and some argue that problems in defining “subject” may not matter, provided it is applied consistently [4]. Bradford's law predicts that the number of journals in the second and third zones will be n and n2 times larger than the first zone respectively [5, 6], and therefore, it should be possible to predict the total number of journals containing papers on a subject once the number in the core and middle zone of journals is known. Once the total number of journals is known, it should be possible to predict how much relevant information is missing from an incomplete search. Given the time-consuming and extensive effort required to identify sources on a subject for a systematic review, accurately predicting the size (and quality, if possible) of the literature from Bradford's law would be useful for such studies. Empirical testing of Bradford's law requires a complete and large bibliography, a well-defined subject, and a limited time frame [5, 7]. Bradford's law has been applied successfully to measure the literature of many subjects, such as nursing [1], science [8], crystallography [9], and occupational therapy [2]. In addition, many librarians will be familiar with Eugene Garfield's Science Citation Index, which is based on Bradford's law [10]. One analysis of all randomized controlled trials (RCTs) in the MEDLINE database found that the journal distribution varied from the standard Bradford's law [11]. However, there have not been any studies on the usefulness of Bradford's law to predict the size of literature in systematic reviews. Other methods to estimate the total number of articles when searching for systematic reviews, such as the Horizon Estimate, have been applied with varying success [12]. This study arose from work with the Acute Respiratory Infections Group, one of the fifty-two entities making up the Cochrane Collaboration. Cochrane Reviews are systematic literature reviews aiming at high quality and, therefore, explicitly striving for completeness. The validity of Bradford's law for systematic reviews has not been addressed in the literature. Accordingly, this study examined whether Bradford's law was valid for the Cochrane Review–identified literature on acute otitis media and pneumonia, conditions that are reported in a wide variety of clinical and health journals [13].

Purpose – The study aims to divulge the patterns of scholarly communication of The Electronic Library from 2003 to 2009 and to measure the coverage and quality of contributions of this journal towards LIS literature.Design/methodology/approach – Seven volumes of The Electronic Library (TEL) published during the years 2003‐2009 collected from Emerald Management Xtra, that constituted 42 issues and a total number of 417 articles carrying 7,442 citations, have been taken up for the analysis. The study analyzes bibliographical forms, types of articles, authorship pattern, geographical distribution of contributors, chronological distribution of citations, length of articles, and ranking of journals. The study employs Bradford's Law of Scattering.Findings – The majority of articles published in TEL fall under the category of research papers, followed by case studies, and general reviews. Regarding the bibliographical distribution of citations, it is found that the majority of citations are from journals, follow...

PurposeThe purpose of this paper is to develop a standard procedure for Bradford analysis: export citations from research databases to a bibliographic management tool, separate the desired citation fields with bibliographic output styles, and then manipulate the empirical data, formulate graph and analyze linearity with Microsoft Excel.Design/methodology/approachThe methodology mainly employed by the paper is to test the theory of Bradford's law of scattering. Based on research work and experiments, a standard procedure for Bradford analysis is to be developed.FindingsA standard procedure for Bradford analysis is developed. The study also shows that the literature in systems librarianship follows Bradford distribution.Originality/valueMany fields or disciplines of literature have been found to follow Bradford's law, which seems to offer a great potential promise for solving library problems. However, empirical Bradford analysis demands tedious computation, and sophisticated graphical formulation. This paper develops an easy operational procedure for Bradford analysis, which will shed light on problem solving in a similar bibliometric analysis.

This study is a bibliometric analysis of the research output of the Jamia Millia Islamia University, New Delhi, in the field of natural sciences. A total of 1313 records in the form of journal articles (984), conference papers (273) and books (56) were analysed. Bradford’s Law and Lotka’s Law were tested and found applicable to the data.

A study of the five years data of journals cited by the physicists at the University of Kerala (UoK), India has been carried out to examine the applicability of Bradford’s law of scattering on a sample of 303 journals containing 2655 citations collected from 12 doctoral theses during the period 2004-08. Ranked list of journals are prepared, and the most preferred journal is Journal of Geophysical Research with the highest of 345 (12.97%) citations. The paper provides summary and review of the scholarly contribution on the various facets of Bradford’s law. In addition to the theoretical aspects of the law, the review covers papers dealing with the application of the law in the various subject fields. Applicability of Bradford’s law on various methods has been tested. The journal distribution pattern of the doctoral theses does not confirm the Bradford’s distribution pattern. The Bradford multipliers are calculated, and the law was found to be applicable with the value of k as 2.66. The distributio...

This research is mainly to explore a bibliometric approach to quantitatively assessing research trend on ubiquitous computing, utilizing the related literature information in Ei database from 1993 to 2009. The result appeared that the literature production within ubiquitous computing title is fast growing. The distribution of cumulative numbers of literature on ubiquitous computing does confirm the typical S-shape for Bradford’s plot. The most document type of publication is conference article, composting 67.92% of total literature and English is the major language (98.06%). Republic of Korea is the biggest contributing country on ubiquitous computing literature publishing (19.91%). National Institute of Informatics (Japan), Sungkyunkwan University (Korea) and Korea University (Korea) are ranking as the top three author affiliations in this paper.

The study presents a detailed analysis of research performance of biotechnology faculties in central universities of India from 1997-2006. The data used for the study were retrieved from two database sources, namely, PubMed, NCBI (National Centre for Biotechnology Information); and ISI Web of Science database—Science Citation Index Expanded (SCIE). Bibliometric techniques have been employed to analyse the data. The results indicate that the growth of literature in biotechnology has steadily increased from 15 articles in 1997 to 43 articles in 2006; two-authored publications predominate amongst the pattern of authorship; applicability of Lotka’s law is validated from the values n = 2.12, C = 0.669, and D = 0.027 obtained using least square method. However, the application of Bradford’s law does not fit to the literature analysed.DOI: 10.14429/djlit.28.6.218

Bradford’s law describes the number of core journals in a given field or subject and has recently been applied to neurosurgery. The objective of this study was to use currently accepted formulations of Bradford’s law to identify core journals of pediatric neurosurgery. An additional analysis was completed to compare regional dependence on citation density among North American and European neurosurgeons. All original research publications from 2009 to 2013 were analyzed for the 25 top publishing pediatric neurosurgeons in North America and Europe, which were sampled to construct regional citation databases of all journal references. Regional differences were compared with each database. Egghe’s formulation and the verbal formulation of Bradford’s law were applied to create specific citation density zones and identify the core journals. Regional comparison demonstrated a preference for the Journal of Neurosurgery and Child’s Nervous System, respectively, but four of the top five journals were common to both groups. Applying the verbal formulation of Bradford’s law to the North American citation database, a pattern of citation density was identified across the first three zones. Journals residing in the most highly cited first zone are presented as the core journals. Bradford’s law can be applied to identify the core journals of neurosurgical subspecialties. While regional differences exist between the most highly cited and most frequently published in journals among North American and European pediatric neurosurgeons, there is commonality between the top five core journals in both groups.

This study has been made an attempt to describe the one of the most essential bibliographic laws i.e. Bradford law of scattering to test the scholarly publications of energy and environment in Australia. A total of 2802 papers published, out which 83.4% were journal articles and 99.7% were in the English language. According to Australian research, the output of Environmental Sciences Ecology (13.807%) account for the largest increase and it is occupied in the first place and Energy Fuels (6.208%) is in the 6 th place during the present study. The three most productive journals with high citations were ‘Ecological Applications’ (= 4, 2721 citations), ‘Astrophysical Journal’ (= 44, 1614 citations), and ‘Monthly notes of the Royal Astronomical Society’ (= 38, 1389 citations) and the maximum number of citations contributed by ‘BAZZAZ FA’ from Harvard University, USA. In this study, based on the speculative aspects of Bradford’s Law of Scattering is tested and identified that the ratio depicts that it does not fit into the Bradford’s law of distribution.

This research presents a bibliometric approach to quantitatively assessing the characteristics of home networking research, utilizing the related literature information from 1981 to 2009 at Engineering Village 2 (Ei) database. The results of this study reveal that the literature production on the research aspect of home networking grows exponentially with an annual growth rate about 20%. The analysis of literature distribution of home networking does confirm the typical S-shape for Bradford's plot in last decade. The most document type of publication is conference article, composting 67.92% of total literature and English is the major language (98.06%). Republic of Korea tops the ranking and delivered the major contribution for total literature publication (19.91%) on home networking.

Author cocitation analysis (ACA) is a branch of bibliometrics. Bibliometrics/informetrics is one of the older areas of library and information science. The terms bibliometrics, scientometrics, and informetrics are often used synonymously. This chapter briefly overviews bibliometrics, including basic concepts, scopes, and study areas of bibliometrics. The areas of study cover bibliometric distribution, citation and cocitation analyses, and library use studies. The study of bibliometric distribution led to the invention of Lotka’s law of scientific productivity, Bradford’s law of core scatter in journals, and Zipf’s law of word occurrence. The researchers in the citation and co-citation areas identify the pattern of how published documents are cited over time using many different approaches such as bibliometric coupling, document cocitation analysis, author cocitation analysis, and co-word analysis. This chapter also discusses assumptions, purposes, benefits, limitations, and criticism of ACA. The last section of this chapter includes discussions of several developments in informetrics and ACA. Since the late 1990s, a new subset of informetrics, webometrics/ cybermetrics, has become part of the main stream library and information science research area. In ACA, there had been a series of intense debates on the use of Pearson correlations coefficients, r, as a similarity measure along with several new developments in ACA visualization tools such as Pathfinder networks (Howard D. White, 2003b), AuthorLink (Lin, White, & Buzydlowski, 2003), and VxInsight (Boyack, Wylie, & Davidson, 2002).

Introduction: The purpose of this study is to find out in which publications biomedical researchers from Granada published their works in the 1988 to 1996 period. Materials and Methodology: Both by searching the IME, Medline and SCI databases and applying the Bradford model the journals in which these authors published their research was found. Results: Results are shown for both the total number of journals as well as the number of foreign and national journals. In the first case it was determined that the majority are Spanish journals, although four foreign journals are also amongst the most frequently used. These and the top Spanish journals are included in SCI. In the foreign journals group a larger amount in publication in these journals is seen due to greater investment in GDP and pressure to publish in foreign journals which began to be felt at the beginning of the nineties. Core disciplines are the most frequent to publish in these journals. In the national journal group it can be seen that most of them are specialized and that very few of them are of a general nature. They are journals used for publishing mainly by clinical disciplines. Conclusions: Output is mostly national. The amount of research published in international journals has increased as has the interest in international journals on core disciplines. Clinical disciplines publish in specialist national journals of little international scope.

Evaluation of the collection is a very important step toward the development of good and balanced collection in the library. Bhabha Atomic Research Centre (BARC) library is a special scientific research library, which provides exhaustive information in the field of nuclear science and technology and allied fields. In this study, we have used Bradford's law to evaluate and analyze the book collection of BARC library. A total collection of 94,450 books was considered for the study. The collection was divided into 27 main subject headings with the help of Universal Decimal Classification class numbers. These headings were then considered for analysis of application of Bradford's law to the collection. The analysis shows that nuclear physics with 14,937 (15.81%) books topped the list followed by nuclear engineering with 12,543 (13.28%) books, chemistry with 11,447 (12.12%) books, medical sciences with 8545 (9.05%) books, and mathematics with 5174 (5.48%) books. These subject headings are then arranged into three Bradford's zones to find the core subjects of the collection. It shows that nuclear physics and nuclear engineering are the I st zone that is, core subject areas of the collection, which are actually of a major interest to the parent organization that is, BARC. The subject areas when arranged according to the Bradford's zones the ratio of zones was observed as 2:5:20 (1:n:n 2 ). This ratio shows that BARC library book collection almost obeys the Bradford's law. In this analysis, we also tried to draw the Bradford's curve for the book collection, which almost matched to the 'S' shaped Bradford's curve.

Bradford's law of the distribution of scientific literature was applied to the indexed and abstracted articles in the field of conservation and preservation for the years 1979-1982 inclusive, in order to identify a core set of journals. Zone 1, Bradford's nucleus, contains five productive journals with a total of 196 articles. However, because many of the articles were news reports of disasters and did not contain substantive information, Bradford's law, when applied to indexed and abstracted articles in this subject area, must be supplemented with other selection procedures.­

This paper presents an analysis of a sample of the monographs listed in the National Library of Medicine's Current Catalog under subject headings in the cardiovascular diseases category. The sample was composed of 326 publishers and 770 monographs. The sample of monographic literature used in this study conforms to Bradford's law and demonstrates that the law is not confined by political or economic boundaries.

The journal citations in A Bibliography on Information Science and Technology (13) provide the data for this Bradford graphical analysis. The mixture of scholarly and nonscholarly work which constitutes the periodical literature of information science is discussed, primarily in terms of the ten journals isolated as the core. The analysis is also directed toward as assessment of the completeness of the bibliography. It is inferred that the bibliography is 72 percent complete in terms of journals and 83 percent complete in terms of articles. Two further uses that have been proposed for the Bradford distribution are ranking subjects in order of breadth and determining policy for collections development. The limited results available in these two areas are considered and problems for future research suggested.

(1973). Bradford’s Law and the Literature of Agriculture. International Library Review: Vol. 5, No. 3, pp. 341-350.

DURING the course of an analysis of some 1,600 periodical references, borrowed by the library of Butterwick Research Laboratories from outside libraries, the results of the analysis were compared with studies on the scatter of articles in periodicals carried out at the Science Library. These were originally published in the journal Engineering, vol. cxxxvii, p. 85, 26 Jan. 1934, and were recently summarized by S. C. Bradford in his book, Documentation (London: Crosby Lockwood and Son, Ltd., 1948). A certain misunderstanding became evident in the algebraic analysis carried out by Bradford and his collaborators, further consideration of which has proved of interest.

The rationalization of scientific library systems might be greatly facilitated by the application of Bradford's law, formulated more than twenty years ago.

This paper analyzes the literature produced on Bradford's Law from 1934 to June 2012. The study compiled 936 documents produced by 1,123 authors, working in sixteen languages to communicate the results of their research, with English the leading language, followed by Chinese, Spanish and Portuguese. The study reveals the fifteen most productive authors, all of which work in English in both academic journals and conference settings. This literature is growing exponentially (R 2 = 0.974), at a rate of 5.4% per year and doubling in size every 13.2 years.

THIS STUDY examines the distribution of 865 articles across 204 source journals reported in the 1979 annual summary of research related to reading to determine the Bradfordian characteristics of the data. Cumulative percentage calculations indicated a proportional monotonic distribution with the scattering of articles among journal titles conforming to Bradford's law revealing a distinct nucleus of high-producing journals and a tailing off to a large number of journals contributing a small number of articles. The implications for retrieving reading research are explored, 10 advantages of an annual summary are presented, and the role of the summary in the future transition to paperless electronic libraries is discussed. The conclusion is that for the immediate future, the print-on-paper summary will continue to provide a valuable tool for the retrieval of reading research.