00594naa#a2200181#i#450# EN\\bibl\66328 20241122134200.5 2074-1618 20171225b2017####ek#y0engy0150####ca RUS RU GENESIS AND DEVELOPMENT OF VOLGA BULGARIA AND THE CITY OF BULGAR. HISTORICAL AND LEGAL ANALYSIS Journal article Saint-Petersburg Saint-Petersburg University of State Fire Service of Emercom of Russia 2017 4 с. Journal article local Gorodchuk E A Suslina I A journals.igps.ru