共 17 条
- [1] BAKKER CB, 1965, OBSTET GYNECOL, V25, P279
- [2] BOAS CVE, 1960, EXCERPTA MEDICA I 46
- [3] CALDERONE MS, 1964, MANUAL CONTRACEPT ED, P104
- [4] CLARK K, 1966, NEGRO AMERICAN ED, P205
- [5] EDMANDS EM, 1968, AM J PUB HEALTH, V38, P263
- [6] ELIOT JW, 1966, OBSTET GYNECOL, V28, P582
- [7] HERNDON CN, 1962, JAMA-J AM MED ASSOC, V180, P395
- [8] HILL AC, 1966, NEGRO AMERICAN, P205
- [9] LEHFELDT H, 1966, FERTIL STERIL, V17, P111
- [10] LIEF H, 1964, MANUAL CONTRACEPTIVE, P104