00664naa#a2200181#i#450# EN\\bibl\65734 20241116211259.6 2074-1618 20230626b2023####ek#y0engy0150####ca RU THE MAIN METHODOLOGICAL PRINCIPLES OF THE DEVELOPMENT OF A PHD THESIS AT THE UNIVERSITY OF STATE FIRE SERVICE OF EMERCOM OF RUSSIA Journal article Saint-Petersburg Saint-Petersburg University of State Fire Service of Emercom of Russia 2023 6 с. Journal article local Научность. 37.026.1 Prokhodimova Elena M. Reva Yuri V. journals.igps.ru