TY  - JOUR
A1  - Blanc, A.K.
A1  - Rutenberg, N.
T1  - Coitus and contraception: the utility of data on sexual intercourse for family planning programs
Y1  - 1991
DO  - 10.2307/1966643
JF  - Studies in Family Planning
VL  - 22
IS  - 3
SP  - 162
EP  - -176

ER  -