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The authors propose a bibliometric model for discarding journal volumes at academic libraries, i.e., removal to offsite storage as part of the library's serials collection. The method is based on the volume as the unit of measurement and on user satisfaction with given titles. The discarding age, calculated for each volume, from the year of publication to the year of decision to discard, is dependent on citation half-life, relative productivity, knowledge area, and residual utility (potential consultations). The model makes it possible to predict the approximate size of a collection when a stationary state is reached in which the inflow of journal volumes is equal to the outflow from discarding. The model is also able to determine the rate of growth of the holdings. This information can be used to optimize future use of available space and economic and maintenance resources; thus promoting efficient management of the collection. [ABSTRACT FROM AUTHOR]

This article reports that in the future it may become commonplace for some documents never to be issued in "original" or printed form, but to be reproduced from typewritten or "cold-type" copy directly by one of the processes of micro-photography. While it may also become commonplace in the future for every home and office to be equipped with its own reading machine, right now it appears that the best customers are librarians. Some of the libraries suggested that a retrospective "micro" publishing program should have a higher priority than a program to publish current materials.

Presents an abstract of the article "Physics Literature: A Reference Manual," by Robert H. Whitford. Information on a survey of physics literature at the college level; Description of efficient library methods; Comment that background materials have been interspersed for greater interest and information.

Presents an abstract of the journal ""Some Photographic Copying Methods Useful in Libraries," by Karl M. Weigert. Information on the use of photographic copying by the library visitors who wish to record quickly and cheaply small parts of articles or books for further study; Description of different methods of making photographic copies; Report that Leica Auxiliary Equipment is applied where only ordinary room light was available.