00639naa#a2200193#i#450# EN\\bibl\112689 20260120062531.2 2311-1402 20180625b2018####ek#y0engy0150####ca RUS RU ORGANIZATION OF THE EDUCATIONAL PROCESS IN HIGH SCHOOL: STREAM GROUP OR INDIVIDUALLY ORIENTED VARIANT? Journal article Nizhnevartovsk Nizhnevartovsk State University 2018 5 с. Journal article local Организация учебной работы. 378.14 RUS Leushin I O Leushina I V vestnik.nvsu.ru