共 72 条
[2]
CONTRACEPTIVE PRACTICE AMONG AMERICAN-WOMEN, 1973-1982
[J].
FAMILY PLANNING PERSPECTIVES,
1984, 16 (06)
:253-259
[4]
Bounds W., 1988, British Journal of Family Planning, V14, P83
[6]
BUMPASS LL, 1970, SCIENCE, V169, P3951
[7]
BUMPASS LL, 1988, POPUL STUDIES, V41, P347
[9]
CAMERON IT, 1986, GEMEPROST CONTRACEPT, V34, P489