Demography and Population Studies / O. S. Shrivastava. Shrivastava, O. S. (Omkar Sharan), 1994- 8691 Economic development Mathematical models. 8692 Economic policy Mathematical models. 8693 Comparative economics. 8694 HB781 .S4977 1994 338.9/001 Includes bibliographical references and indexes. Bhopal : Progress Publishers : distributors, Progressive Book Depot, 1994. 1994. 1974 Text xii, 582 p. ; eng