00509naa#a2200169#i#450# EN\INFRA-M\bibl\800 20241016171702.3 1998-0728 20131121b2013####ek#y0engy0150####ca RUS RU Is it possible to acquaint the primary schoolchild to research activity? Journal article Moscow INFRA-M Academic Publishing LLC. 2013 3 с. Journal article local Vinogradova Natalya Fedorovna naukaru.ru