L Bumpass, C F Westoff. Show Affiliations »
Abstract
Mesh: See more » African AmericansBirth OrderContraceptionEducational StatusEuropean Continental Ancestry GroupFamily Planning ServicesHumansIncomePopulation ControlPovertyUnited States
Year: 1970 PMID: 5450693 DOI: 10.1126/science.169.3951.1177
Source DB: PubMed Journal: Science ISSN: 0036-8075 Impact factor: 47.728