[Role of abortion on demand and contraception in the reproductive process in a population].
D000029:Abortion, Legal / Q000639:trends*; D002031:Bulgaria; D003267:Contraception / Q000639:trends*; D005060:Europe; D005260:Female; D006801:Humans; D008297:Male; D011247:Pregnancy
Roliata na abortite po zhelanie i antikontseptsiiata v protsesa na vuzproizvodstvoto na naselenieto.