| Literature DB >> 7380233 |
Abstract
Keywords: Biological Characteristics; Biology; Birth Rate--changes; Demographic Factors; Developed Countries; Europe; Fertility; Fertility Measurements; Germany, Federal Republic Of; Population; Population Characteristics; Population Dynamics; Seasonal Variation; Sex Distribution; Sex Factors; Sex Ratio; Western Europe
Mesh:
Year: 1980 PMID: 7380233 DOI: 10.1055/s-2008-1039319
Source DB: PubMed Journal: Geburtshilfe Frauenheilkd ISSN: 0016-5751 Impact factor: 2.915