TY JOUR TI ON THE ISSUE OF THE WORK OF THE MEDICAL AND SANITARY SERVICE OF THE LOCAL AIR DEFENSE IN BESIEGED LENINGRAD: BASED ON THE MATERIALS OF THE ARCHIVE OF THE FIRE AND TECHNICAL EXHIBITION NAMED AFTER B.I. KONCHAEV KW the siege of Leningrad KW the medical and sanitary service of the local air defense KW hospitals KW sanitary guards JO Psychological and pedagogical problems of human and social security AU Bolotin, D.D. AU Smirnova, A.A. AU Knyazeva, Y.S. PY 2025 IS 2025 PB Saint-Petersburg University of State Fire Service of Emercom of Russia