00486naa#a2200157#i#4500001001500000005001700015011001400032100004100046102000700087200009200094210004600186215001000232608002700242700003300269856002600302EN\\bibl\9919120250714215707.1##a2542-1840##a20250527b2025####ek#y0engy0150####ca##aRU1#aExtracurricular Activities in Primary Schools in Donbas in 1920–1940eJournal article1#aKemerovocKemerovo State Universityd2025##a6 с.##aJournal article2local#1aGordeevagTat'yana Sergeevna4#avestnik-pses.kemsu.ru