A wide range of expert opinion on current demographic problems is presented in this book, based on the proceedings of the 1949 meeting of the Population Association of America. The contributors are: S.L. Wolfbein, P.H. Jacobson, C. Tietze, I. Taeuber, J.C. Russell, W.J. Gibbons, S.J. K. Davis, R. Bradfield, J.D. Black, G. Clapp, R. Eckler, T.J. Woffter, C. F. Schmid, H. C. Taylor, C. Senior, I. DeA. Reid, W.H. Grabill, R. Freedman, M. Woodside. Discussions include total marital dissolutions in the United States, illegal abortions, proposals for modifying the net reproduction rate, population and scarce food resources, and what is probably the most complete statement available on the relation of the Catholic value system to human fertility. Originally published in 1949. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.