Boserup, Ester. Population and technological change : a study of long-term trends / Ester Boserup. - Chicago : University of Chicago Press, 1981. - xi, 255 p. ; 24 cm. Includes index. Bibliography: p. 235-245. ISBN: 0226066738 Subjects--Topical Terms: Population. Technological innovations. Dewey Class. No.: 304.6/2