EARNESTLY, F. . The IMPROVING IRON AND MANGANESE QUALITY IN GROUNDWATER WITH NATURAL FILTERS METHOD. Jurnal Katalisator, [S. l.], v. 6, n. 1, 2021. Disponível em: http://publikasi.lldikti10.id/index.php/katalisator/article/view/214. Acesso em: 17 oct. 2021.