Fertility, biology, and behavior : an analysis of the proximate determinants / John Bongaarts, Robert G. Potter. Bongaarts, John, 1945- Potter, Robert G. Fertility, Human. Birth intervals. Family size. Family planning. Fertility. GN241 .B66 1983 304.634 19 BOF Includes bibliographies and index. New York : Academic Press, c1983. c1983. 1983 Text xi, 230 p. : eng Studies in population