00477naa#a2200169#i#450# EN\INFRA-M\bibl\1662 20241201054548.7 1998-0744 20140210b2014####ek#y0engy0150####ca RUS RU Classifying Techniques of Educational Activities Journal article Moscow INFRA-M Academic Publishing LLC. 2014 11 с. Journal article local Bershadskiy Mikhail zh-szf.ru