[Some social-hygienic factors affecting the birth rate].
D000328:Adult; D000367:Age Factors; D000368:Aged; D001723:Birth Rate; D005260:Female; D006801:Humans; D008875:Middle Aged; D011247:Pregnancy; D011295:Prenatal Care
O nekotorykh sotsial'no-gigienicheskikh faktorakh, vliiaiushchikh na razmery rozhdaemosti.