N. A. A. Mohamad Mahani and N. . Hamidon, “Eggshell Powder as an Adsorbent for Removal of Lead (II) in Panchor’s River”, jaita, vol. 2, no. 2, pp. 42–49, Dec. 2021, Accessed: Aug. 13, 2026. [Online]. Available: https://journal.uthm.edu.my/index.php/jaita/article/view/9523