Qadir, Danial, Hilmi Mukhtar, and Kok Keong Lau. “MONITORING AND PHYSICO-CHEMICAL ASSESSMENT OF EX-MINING POOLS IN PERAK, MALAYSIA”. Malaysian Journal of Science 36, no. 1 (April 28, 2017): 32–46. Accessed December 22, 2024. https://juku.um.edu.my/index.php/MJS/article/view/6543.