title: [Effect of some natural and social factors on the physical development of newborn infants].
mesh_terms: D000886:Anthropometry; D001722:Birth Order; D002031:Bulgaria; D005260:Female; D006128:Growth; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008423:Maternal Age; D012424:Rural Population; D012959:Socioeconomic Factors; D014505:Urban Population
vernacular_title: Vliianie na niakoi prirodni i sotsialni faktori vurkhu fizicheskoto razvitie na novorodenite detsa