[On the article by B. F. Shagan and P. P. Afanasenko "Resolved and unresolved problems of age grouping in childhood"].
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D002965:Classification; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D010372:Pediatrics
Po povodu stat'i B. F. Shagana i P. P. Afanasenko "Reshennye i nereshennye voprosy periodizatsii detskogo vozrasta.