00677naa#a2200193#i#450# EN\\bibl\66911 20241122185204.5 1998-8990 20171225b2017####ek#y0engy0150####ca RUS RU INCREASING THE LEVEL OF SAFETY OF PERSONNEL DURINGTHE WORK, CALCULATIONS OF THE PARAMETERS IN THE MEANS OF INDIVIDUAL PROTECTION OF RESPIRATORY ORGANS Journal article Saint-Petersburg Saint-Petersburg University of State Fire Service of Emercom of Russia 2017 16 с. Journal article local Karov K A Kalanin I I Andrianov R S journals.igps.ru