00744naa#a2200181#i#450# EN\\bibl\119250 20260406020244.1 2074-1618 20260403b2026####ek#y0engy0150####ca RU CONTRIBUTION TO THE ORGANIZATION OF THE EPIDEMIOLOGICAL SAFETY SYSTEM FOR THE POPULATION IN BESIEGED LENINGRAD BY F.I. MASHANSKY Journal article Saint-Petersburg Saint-Petersburg University of State Fire Service of Emercom of Russia 2026 5 с. Journal article local Историческая наука. Вспомогательные исторические науки. 930 Bolotin Danila D. Smirnova Anna A. journals.igps.ru