共 50 条
- [1] TEENAGE PREGNANCY IN THE UNITED-STATES [J]. FAMILY PLANNING PERSPECTIVES, 1988, 20 (06): : 262 - 272
- [2] ZINC NUTRITION IN UNITED-STATES [J]. AMERICAN JOURNAL OF CLINICAL NUTRITION, 1973, 26 (11): : 1251 - 1260
- [4] NUTRITION MONITORING IN THE UNITED-STATES [J]. JOURNAL OF THE CANADIAN DIETETIC ASSOCIATION-REVUE DE L ASSOCIATION CANADIENNE DES DIETETISTES, 1990, 51 (04): : 466 - 468
- [8] TEENAGE CHILDBEARING - UNITED-STATES, 1966-75 [J]. PUBLIC HEALTH REPORTS, 1978, 93 (01) : 96 - 96