00577naa#a2200181#i#450# EN\\bibl\2171 /en/manage/index 20250425022707.5 1993-7768 20140603b2014####ek#y0engy0150####ca RUS RU Contemporary Approaches to Classification of Organization- and Company-Consumed Services Journal article CHERKIZOVO Russian State University of Tourism and Service 2014 7 с. Journal article local Povorina Elena fht.editorum.ru /en/manage/index