performance of sexual intercourse with the deliberate intention of rendering infertile an act which could be fertile
performance of sexual intercourse with the deliberate intention of rendering infertile an act which could be fertile
performance of sexual intercourse with the deliberate intention of rendering infertile an act which could be fertile <=> contraception
performance of sexual intercourse with the deliberate intention of rendering infertile an act which could be fertile
prevents conception by preventing ovulation <=> progesterone drug ("the pill")
performance of sexual intercourse with the deliberate intention of rendering infertile an act which could be fertile
regulates conception on the basis of the monthly regularity of the woman's cycle <=> rhythm method or calendar rhythm