TY - BOOK AU - Moffett,George D. TI - Critical masses: the global population challenge SN - 067085235X AV - HB871 .M57 1994 U1 - 363.9/1 20 PY - 1994/// CY - New York PB - Viking KW - Overpopulation KW - Local KW - Birth control KW - Environmental degradation KW - Population forecasting N1 - Includes bibliographical references and index ER -