00531naa#a2200181#i#450# EN\INFRA-M\bibl\11100 20241123005915.6 1998-0701 20160311b2016####ek#y0engy0150####ca RUS RU Socio-Economic Content, Legal Regulation, Development Trend of Educational Services Journal article Moscow INFRA-M Academic Publishing LLC. 2016 5 с. Journal article local Loseva N. Petrova N. zh-szf.ru