Radeva, S. 2023. RESEARCH OF THE AMBIENT AIR POLLUTION IN THE INDUSTRIAL REGION DEVNYA, BULGARIA: RESEARCH OF THE AMBIENT AIR POLLUTION IN THE INDUSTRIAL REGION DEVNYA, BULGARIA. JOURNAL SCIENTIFIC AND APPLIED RESEARCH. 9, 1 (Mar. 2023), 40–52. DOI:https://doi.org/10.46687/jsar.v9i1.191.