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 on measuring the dynamics of contraceptive use, New York, 5-7 December, 1988 /  
U1  - 363.96 
PY  - 1991///
CY  - New York : 
PB  - United Nations, 
KW  - Birth control
KW  - Contraceptive use / Failures
N1  - Includes bibliographical references
ER  -