00524naa#a2200181#i#450# EN\INFRA-M\bibl\1528 /en/manage/index 20250126033142.7 1998-0728 20140217b2014####ek#y0engy0150####ca RUS RU Electronic Textbook: Pros and Cons Journal article Moscow INFRA-M Academic Publishing LLC. 2014 3 с. Journal article local Vinogradova Natalya Fedorovna fht.editorum.ru /en/manage/index