E Gray, N M Morrison. Show Affiliations »
Abstract
Entities: Species
Mesh: See more » Birth RateEthnic GroupsFactor Analysis, StatisticalFamily CharacteristicsFamily Planning ServicesFemaleHumansMaleSex RatioStudentsUnited States
Year: 1974 PMID: 4847757 DOI: 10.1093/oxfordjournals.jhered.a108491
Source DB: PubMed Journal: J Hered ISSN: 0022-1503 Impact factor: 2.645