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This article presents a comparative study of the determination of Ph.D. dissertations in the physical and social sciences. Physicists are the most likely to cite their own dissertations and also the most likely to cite dissertations from international sources. Political scientists are the most likely to avail themselves of findings outside the immediate locale of the citer. In both the physical and social sciences approximately 70 percent of the citations refer to dissertations which are cited within five years of their approval. No similar studies exist for political science and the physical sciences, but the existent data suggest the possible hypothesis that the dissemination of information in the social science journals is more dependent upon the relationship between the doctoral origins of journal editors and contributors than is the case in the physical science. Political scientists are the most likely to avail themselves of findings outside the immediate locale of the citer, 60.9 percent, with physicists being the least likely a 18.4 percent.

Scientific works are usually referred to in journal artic ales for two purposes. These are to acknowledge other scientists' contributions relate to the author's work, and to indicate the information sources used by the author in the scientific pursuits reported in his article, and thereby to place the work in proper perspective in the cumulated knowledge of science. The present study attempted to extend previous work on bibliographical reference patterns in sociological journals in the following ways. These are by selecting for study those journals to which American sociologists prefer to submit their work by including, over a two-year period, all bibliographical references like journals, books, technical reports, etc and by including, for initial comparison, a journal from the physical sciences. Such a study it was hoped would yield data concerning similarities and differences among the sociological journals and between the sociological journals and the physical science journal.

The article presents names of certain books related to economics. Some of the books on general economics are — "The American Economic Association," by A.W. Coats, "Value Judgments," by R. Harrod, "The Effectiveness of "The American Economy" in Training Secondary School Teachers," by P. Saunders and "A Controlled Evaluation of "The American Economy," by J.R.A. Felton and C.R. McConnell. Books on price, income and employment include — "On Bernoullian Utility for Goods and Money," by S.N. Afriat, " Neoclassical Based Technical Progress and a Neoclassical Theory of Economic Growth," by A. Amano, "Profit-Maximising and Non-Price Competition," by G.C. Archibald, "The Wealth Effect and Consumption: A Statistical Injury," by J.J. Arena, "The coefficient of Ignorance," by P.B. Streeten and T. Balogh, "A note on Progression and Leisure," by G.R. Sparks and R. Barlow, "Organized Commodity Stabilization With Voluntary Participation," by B.S. Yamey and P.T. Bauer and "Balanced Growth and Technological Progress," by G.O. Bierwag.