00552naa#a2200181#i#450# EN\\bibl\112438 20260118110017.7 2311-1402 20200925b2020####ek#y0engy0150####ca RUS RU THE TEACHERS’ OPINION ON EFFICIENCY OF DISTANCE EDUCATION Journal article Nizhnevartovsk Nizhnevartovsk State University 2020 6 с. Journal article local Основные понятия. 37.011 RUS Gayvoronskiy V G vestnik.nvsu.ru