00530naa#a2200181#i#450# EN\\bibl\80337 20260221034228.6 2500-1825 20151225b2015####ek#y0engy0150####ca RUS RU CREATING OLD RUSSIAN STATE AND ITS MODERNIZATION IN IX-XIII CENTURIES Journal article Krasnoyarsk Krasnoyarsk State Agrarian University 2015 9 с. Journal article local . 330.19 RUS Rogachyov A G vestnik.kgau.ru