00528naa#a2200181#i#450# EN\INFRA-M\bibl\1019 /en/manage/index 20250412223942.6 1998-0728 20131225b2013####ek#y0engy0150####ca RUS RU Electronic Textbook: Pros and Contras Journal article Moscow INFRA-M Academic Publishing LLC. 2013 6 с. Journal article local Vinogradova Natalya Fedorovna test.editorum.ru /en/manage/index