Optimum P% Library of Scientific Periodicals
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A quantitative method is described for finding the optimum percentage of periodicals for a library in a given field. The appearance of new journals is apparently counterbalanced by the disappearance of the old.
[1] B. C. Brookes. PHOTOCOPIES v. PERIODICALS , 1970 .
[2] B. Brookes,et al. Bradford's Law and the Bibliography of Science , 1969, Nature.
[3] Merrill R. Oliver. THE EFFECT OF GROWTH ON THE OBSOLESCENCE OF SEMICONDUCTOR PHYSICS LITERATURE , 1971 .