I Sivin. Show Affiliations »
Abstract
Mesh: See more » Abortion, SpontaneousAdultAge FactorsAsia, SoutheasternAsia, WesternAttitudeBirth RateContraceptionContraceptives, OralDeveloping CountriesFamily Planning ServicesFemaleFertilityHumansInternational CooperationIntrauterine DevicesMarriageMexicoModels, TheoreticalMotivationParityPostnatal CarePregnancyProbabilityPuerto RicoSouth AmericaTime Factors
Substances: See more » Contraceptives, Oral
Year: 1971 PMID: 5164392
Source DB: PubMed Journal: Stud Fam Plann ISSN: 0039-3665