00633naa#a2200181#i#4500001001500000005001700015011001400032100004100046102000700087200007800094210004600172215001000218608002700228675010800255700003900363700002800402856002100430EN\\bibl\4417520240507115246.2##a2542-1840##a20210519b2021####ek#y0engy0150####ca##aRU1#aDevelopment of Motivation Sphere in 14- and 15-Year-OldseJournal article1#aKemerovocKemerovo State Universityd2021##a9 с.##aJournal article2local##aОбразование. Воспитание. Обучение. Организация досуга. 37#1aMikhailovagMargarita Samandarovna#1aShamovskayagTatiana V.4#ajcenter.kemsu.ru