Tulemisova, Gul’zhamal, Rauan Abdinov, Gaukhar Kabdrakhimova, and JanetovТalap. “Ecological State of the River Ural”. Chemical Bulletin of Kazakh National University 85, no. 2 (August 27, 2017): 18-24. Accessed November 23, 2024. https://bulletin.chemistry.kz/index.php/kaznu/article/view/808.