Fertility control in the United States before the contraceptive revolution.
D000328:Adult; D000368:Aged; D001721:Birth Intervals; D003267:Contraception / Q000379:methods*; D003710:Demography; D005193:Family Planning Services / Q000266:history*; D005260:Female; D005298:Fertility; D049673:History, 20th Century; D006801:Humans; D008875:Middle Aged; D011247:Pregnancy; D013245:Sterilization, Reproductive; D014481:United States