00604naa#a2200181#i#4500001001500000005001700015011001400032100004100046102000700087200008700094210004600181215001100227608002700238675007300265700002000338700003800358856002600396EN\\bibl\4732120240419074320.5##a2500-3372##a20211122b2021####ek#y0engy0150####ca##aRU1#aE-learning Systems in the Russian Mining and Metallurgical SectoreJournal article1#aKemerovocKemerovo State Universityd2021##a10 с.##aJournal article2local##aСтатистика. Демография. Социология. 31#1aKazakovagM. I.#1aSelivanovagTat'yana Vladimirovna4#avestnik-pses.kemsu.ru