Indah, Shinta, Denny Helard, and Fatilla Hudawaty. “Column Study of Aluminum Adsorption from Groundwater by Natural Pumice”. International Journal on Advanced Science, Engineering and Information Technology 9, no. 5 (October 23, 2019): 1600–1604. Accessed July 22, 2024. https://ijaseit.insightsociety.org/index.php/ijaseit/article/view/9455.