Historical and contemporary trends in illegitimacy.
D000022:Abortion, Spontaneous; D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000385:Aid to Families with Dependent Children; D002835:Christianity; D003075:Coitus; D003267:Contraception; D005006:Ethnicity; D005060:Europe; D005260:Female; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D007086:Illegitimacy / Q000266:history*; D008019:Life Style; D008297:Male; D008393:Marriage; D011247:Pregnancy; D012847:Single Person; D012945:Social Values; D012959:Socioeconomic Factors; D014481:United States; D014857:Warfare