LING XIN, Khong. Removal of Iron in Groundwater Using Marble Column Filter. International Journal of Integrated Engineering, [S. l.], v. 11, n. 2, 2019. Disponível em: https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/4244.. Acesso em: 19 may. 2024.