00934naa#a2200217#i#4500001002200000003001700022005001700039011001400056100004100070101000800111102000700119200013600126210005100262215001000313608002700323675011300350686005600463686014000519700001800659856003900677EN\INFRA-M\bibl\26896/en/manage/index20241203032555.2##a1998-0728##a20190219b2019####ek#y0engy0150####ca0#aRUS##aRU1#aMethodology of Studying the Problem of Underperformance of Children of Preschool and Primary School Age in GermanyeJournal article1#aMoscowcINFRA-M Academic Publishing LLC.d2019##a6 с.##aJournal article2local##aОбразование. Воспитание. Обучение. Организация досуга. 37zRUS##aСистема образования. 14.152grnti##aОбщеобразовательная школа. Педагогика общеобразовательной школы. 14.252grnti#1aPisarevagL. 4#atest.editorum.ruu/en/manage/index