00550naa#a2200181#i#450# EN\\bibl\66051 20241026192949.6 2074-1618 20130625b2013####ek#y0engy0150####ca RUS RU SOCIOCULTURAL DYNAMICS OF CHANGE OF GEOPOLITICAL ERAS Journal article Saint-Petersburg Saint-Petersburg University of State Fire Service of Emercom of Russia 2013 3 с. Journal article local Kefeli I F Plebanek O V journals.igps.ru