1.
Daud Z, Abubakar MH, Awang H, et al. Optimization of Batch Conditions for COD and Ammonia Nitrogen Removal Using cockle shells Through Response Surface Methodology. IJIE. 2019;10(9). Accessed August 7, 2026. https://journal.uthm.edu.my/index.php/ijie/article/view/2432