WAANGSIR, Ferry WF; ARNAWA, Gede Putu; SADUKH, Johannis JP; SULUH, Debora G. The Use of Various Filtaritaion Media in Lowering the Level of Water Hardness . Jurnal Penelitian Pendidikan IPA, [S. l.], v. 9, n. 3, p. 1182–1186, 2023. DOI: 10.29303/jppipa.v9i3.3086. Disponível em: https://jppipa.unram.ac.id/index.php/jppipa/article/view/3086. Acesso em: 20 may. 2024.