title: [Role of preschool education in the development of mentally retarded children].
mesh_terms: D002675:Child, Preschool; D004495:Education of Persons with Intellectual Disabilities; D006801:Humans; D008607:Intellectual Disability / Q000534:rehabilitation*
vernacular_title: Rol' doshkol'nogo vospitaniia v razvitii umstvenno otstalogo rebenka.