00545naa#a2200181#i#450# EN\\bibl\4037 20241006194603.7 2073-0462 20141214b2014####ek#y0engy0150####ca RUS RU On the essence of management forms manifolds in agrarian sphere at institutional reformation Journal article Kazan Kazan state agrarian University 2014 5 с. Journal article local Khismatullin Marsel Khafizov Dafik zh-szf.ru