W H James. Show Affiliations »
Abstract
Keywords: Biology; Genetics; Genetics, Population; Research Report
Mesh: See more » AdultAsiaEuropeFar EastFemaleFertilizationHumansLatin AmericaMaternal AgeNorth AmericaPregnancySouth AfricaTwins
Year: 1982 PMID: 7174726 DOI: 10.1017/s0021932000014346
Source DB: PubMed Journal: J Biosoc Sci ISSN: 0021-9320