[The encyclical "HUMANAE Vitae" and birth rate].
D001723:Birth Rate; D002410:Catholicism; D003276:Contraceptives, Oral; D006801:Humans; D007231:Infant, Newborn; D009426:Netherlands; D011158:Population Growth; D014671:Vatican City
D003276:Contraceptives, Oral
De encycliek "Humanae Vitae" en het geboortencijfer.