WAANGSIR, Ferry WF; ARNAWA, I Gede Putu; SADUKH, Johanis JP; MAUGURU, Edwin M. The Effectiveness of Reducing Hardness in the Filtration Process Using Mixed Media with Detention Time Variations. Jurnal Penelitian Pendidikan IPA, [S. l.], v. 9, n. 12, p. 11060–11064, 2023. DOI: 10.29303/jppipa.v9i12.5592. Disponível em: https://jppipa.unram.ac.id/index.php/jppipa/article/view/5592. Acesso em: 1 jul. 2024.