00666cam a2200193 i 4500 RG136 International Planned Parenthood Federation. Fertility regulation during human lactation : proceedings of the sixth IPPF Biomedical Workshop, held in London, 23rd and 24th November 1976 / Cambridge [Eng.] : Galton Foundation, 1977. vi, 211 p. : ill. ; Supplement - Journal of biosocial science ; no. 4 Contraception Lactation Amenorrhea, Lactation Breastfeeding Oral contraceptives Parkes, A. S. BK 70 70 0 0 0 0 NCPDL NCPDL 2015-04-27 0 RG136 0116 2025-07-04 00:00:00 2015-04-27 BK