[CHANGES IN THE BIRTH AND CONCEPTION FREQUENCY DURING CHANGING TIMES].
D005260:Female; D005298:Fertility; D005306:Fertilization; D005858:Germany; D005860:Germany, West; D006664:History; D049673:History, 20th Century; D006801:Humans; D036801:Parturition; D011247:Pregnancy; D013223:Statistics as Topic; D014798:Vital Statistics
FERTILITY; GERMANY, WEST; HISTORY; HISTORY OF MEDICINE, 20TH CENT.; PREGNANCY; STATISTICS; VITAL STATISTICS
VERAENDERUNGEN IN DER GEBURTEN- UND KONZEPTIONSHAEUFIGKEIT IM WANDEL DER ZEITEN.