Todorova M. AIR POLLUTION WITH SULFUR OXIDES FROM INDUSTRY IN SOUTH-WESTERN AND SOUTH-EASTERN REGIONS OF BULGARIA: AIR POLLUTION WITH SULFUR OXIDES FROM INDUSTRY IN SOUTH-WESTERN AND SOUTH-EASTERN REGIONS OF BULGARIA. JSAR [Internet]. 2023 Mar. 9 [cited 2024 Dec. 4];5(1):213-24. Available from: https://jsar.ftn.shu.bg/index.php/jsar/article/view/132