共 9 条
- [1] BACHRACH C, 1987, NATIONAL VITAL HLTH, V23
- [3] *CTR DIS CONTR, 1984, SEX TRANSM DIS STAT
- [4] MACIAK BJ, 1987, JAMA, V258, P2063
- [5] FERTILITY AND FAMILY-PLANNING IN THE 1970S - THE NATIONAL-SURVEY-OF-FAMILY-GROWTH [J]. FAMILY PLANNING PERSPECTIVES, 1982, 14 (06): : 314 - 320
- [7] *US BUR CENS, 1985, CURR POP REP P25, V965, P28
- [8] WESTROM L, 1983, INT PERSPECTIVES NEG, P235