Radeva, S. . “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, vol. 9, no. 1, Mar. 2023, pp. 40-52, doi:10.46687/jsar.v9i1.191.