00601naa#a2200181#i#4500001002200000003001700022005001700039011001400056100004100070101000800111102000700119200013400126210005100260215001000311608002700321700003200348856003900380EN\INFRA-M\bibl\13073/en/manage/index20250302223911.7##a1998-0728##a20160817b2016####ek#y0engy0150####ca0#aRUS##aRU1#aDevelopment of Ideas of Math Education of Younger Schoolchildren in Soviet School in 30-50-ies of the XX CenturyeJournal article1#aMoscowcINFRA-M Academic Publishing LLC.d2016##a5 с.##aJournal article2local#1aKochurovagElena Eduardovna4#atest.editorum.ruu/en/manage/index