共 6 条
[1]
MATERNAL EMPLOYMENT AND BREASTFEEDING - A STUDY OF 567 WOMENS EXPERIENCES
[J].
AMERICAN JOURNAL OF DISEASES OF CHILDREN,
1984, 138 (10)
:958-960
[2]
DIXON WJ, 1983, BMDP STATISTICAL SOF, P555
[3]
KURINIJ N, 1988, PEDIATRICS, V81, P365
[4]
MARTINEZ GA, 1983, PEDIATRICS, V71, P166
[5]
*US BUR CENS, 1982, 1980 CENS POP
[6]
1978, PEDIATRICS, V62, P591