[Development of children's preschool institutions in the USSR].
D002656:Child Day Care Centers / Q000266:history*; D002669:Child Welfare / Q000266:history; D002675:Child, Preschool; D049673:History, 20th Century; D006801:Humans; D007223:Infant; D009724:Nurseries, Infant / Q000266:history; D014586:USSR
Razvitie detskikh doshkol'nykh uchrezhdeniĭ v SSSR.