TY - BOOK ED - United Nations. Department of International Economic and Social Affairs TI - Measuring the dynamics of contraceptive use: proceedings of the United Nations Expert Group Meeting (1988: New York) U1 - 613.9406 21st PY - 1991/// CY - New York PB - United Nations KW - Population-Statistics-United States; Statistics and dynamics (Social Sciences); Contraception-Untied Statres; Contraceptives-United States ER -