[Method of studying the social hygienic aspects of the birth rate of a cohort of young families].
D000367:Age Factors; D001723:Birth Rate; D002031:Bulgaria; D005191:Family Characteristics; D005260:Female; D006801:Humans; D008297:Male; D008393:Marriage; D008423:Maternal Age; D009031:Moscow; D012959:Socioeconomic Factors; D014586:USSR; D014505:Urban Population
K metodike izucheniia sotsial'no-gigienicheskikh aspektov rozhdaemosti kogort molodykh semeĭ.