Antonyak, Halyna, Marta Lesiv, Natalia Panas, and Stepan Yanyshyn. “LEVELS OF HEAVY METALS IN SEVERAL RIVERS OF THE WESTERN BUG AND DNIESTER BASINS IN THE LVIV REGION (WESTERN UKRAINE)”. Scientific Journal of Polonia University 35, no. 4 (June 28, 2019): 11-18. Accessed July 17, 2024. http://pnap.ap.edu.pl/index.php/pnap/article/view/368.