Ngoc Sang, Huynh. “THE ROLE OF PH IN TREATING OF GROUND WATER AND MANY FILTER MODELING BY THE NATURAL INORGANIC MATERIALS”. VNUHCM Journal of Science and Technology Development 7, no. 2 (February 29, 2004): 58-64. Accessed August 19, 2025. https://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/3165.