title: "Simple methods" and "determined contraceptors": the statistical evaluation of fertility control, 1957-1968.
authors.forename: M L
authors.initials: ML
authors.lastname: Meldrum
mesh_terms: D003268:Contraception Behavior / Q000266:history* / Q000706:statistics & numerical data; D003274:Contraceptive Devices, Female / Q000266:history* / Q000706:statistics & numerical data; D005193:Family Planning Services / Q000266:history* / Q000706:statistics & numerical data; D049673:History, 20th Century; D006801:Humans; D007434:Intrauterine Devices / Q000266:history / Q000706:statistics & numerical data; D014481:United States