TY - BOOK AU - Moffett,George D TI - Critical masses: the global population challenge SN - 067085235X (alk. paper) U1 - 363.9/1 21 PY - 1994/// CY - New York PB - Viking KW - Birth control KW - Environmental degradation KW - Overpopulation KW - Population forecasting N1 - Includes bibliographical references (p. 335-341) and index ER -