00475naa#a2200169#i#450# EN\INFRA-M\bibl\9663 20240713164918.6 1998-0728 20160417b2016####ek#y0engy0150####ca RUS RU Cognitive Need Content of Younger Schoolchildren Journal article Moscow INFRA-M Academic Publishing LLC. 2016 5 с. Journal article local Zgurskaya Tatyana naukaru.ru