Classics of Medicine and Surgery. (Formerly Titled: Epoch-Making Contributions to Medicine, Surgery, and the Allied Sciences).C. N. B. CamacElementary Statistics with Applications in Medicine and the Biological Sciences.Frederick E. CroxtonFruit Key and Twig Key to Trees and Shrubs. Fruit Key to Northeastern Trees. Twig Key to the Deciduous Woody Plants of Eastern North America.William M. HarlowCulture Methods for Invertebrate Animals. A Compendium Prepared Cooperatively by American Zoologists Under the Direction of a Committee from Section F of the American Association for the Advancement of Science.James G. NeedhamAn Introduction to the Study of Experimental Medicine.Claude Bernard , Henry CopleyExperiments and Observations on the Gastric Juice and the Physiology of Digestion.William BeaumontThe Biology of the Amphibia.G. Kingsley NobleFrom Magic to Science.Charles Singer