00709naa#a2200193#i#450# EN\\bibl\91374 20250620212842.5 2071-7318 20250310b2025####ek#y0engy0150####ca RU RESEARCH CONCENTRATION OF HARMFUL SUBSTANCES IN THE WORKING AREA AIR OF LASER CUTTING UNITS METALS Journal article Belgorod Belgorod State Technological University named after V.G. Shukhov 2025 9 с. Journal article local Воздействие вредных веществ. Загрязнение. 504.054 Taranyuk I. V. Slobodyuk A. P. Fomenko Y. V. bulletinbstu.editorum.ru