00484naa#a2200169#i#450# EN\\bibl\13057 20250128194019.2 2071-2367 20160829b2016####ek#y0engy0150####ca RUS RU Key problems of the development of non-profit organizations activity in the Belgorod region Journal article Moscow RANEPA 2016 6 с. Journal article local Rudakova Oksana zh-szf.ru