共 15 条
[12]
STAHLMAN MT, 1969, PROBLEMS NEONATAL IN, P17
[13]
*US BUR CENS, 1975, STAT ABST US, P391
[14]
*US DEP HEW, HSM728130 PUBL
[15]
SOME ESTIMATES OF POTENTIAL REDUCTION IN UNITED-STATES INFANT MORTALITY RATE BY FAMILY-PLANNING
[J].
AMERICAN JOURNAL OF PUBLIC HEALTH AND THE NATIONS HEALTH,
1972, 62 (08)
:1130-&