共 16 条
[1]
ASHKEN IC, 1980, BRIT J FAM PLANN, V6, P77
[2]
SEXUAL-ACTIVITY IN GIRLS UNDER 16 YEARS OF AGE
[J].
BRITISH JOURNAL OF OBSTETRICS AND GYNAECOLOGY,
1986, 93 (08)
:787-793
[3]
BLACK D, 1979, FERTILITY CONTRACEPT, V3, P459
[4]
Bury J., 1984, TEENAGE PREGNANCY BR
[6]
DAVIES IM, 1980, POPULATION TRENDS, V19, P19
[7]
FARRELL C, 1978, MY MOTHER SAID, P18
[8]
JOHNSON RA, 1982, APPLIED MULTIVARIATE
[9]
MCANARNEY ER, 1986, PEDIATRICS, V78, P585