共 10 条
- [1] BUXTON CL, 1958, HUMAN INFERTILITY
- [3] HINES DC, 1968, FERTIL STERIL, V19, P841
- [4] POTTER RG, 1967, POP STUD-J DEMOG, V20, P311, DOI 10.1080/00324728.1967.10409966
- [5] POTTER RG, IN PRESS
- [6] TIETZE C, 1967, 8 PROGR REP COOP STA
- [7] Westoff C.F., 1961, FAMILY GROWTH METROP
- [9] WESTOFF CF, 1963, 3 CHILD
- [10] WHELPTON PK, 1966, FERTILITY FAMILY PLA