00469naa#a2200169#i#450# EN\INFRA-M\bibl\10442 20241124195946.7 1998-0728 20151218b2015####ek#y0engy0150####ca RUS RU Design Basics Learning by Younger Schoolchildren Journal article Moscow INFRA-M Academic Publishing LLC. 2015 6 с. Journal article local Zymaleva L. zh-szf.ru