Waangsir FW, Arnawa IGP, Sadukh JJ, Mauguru EM. The Effectiveness of Reducing Hardness in the Filtration Process Using Mixed Media with Detention Time Variations. jppipa, pendidikan ipa, fisika, biologi, kimia [Internet]. 2023 Dec. 20 [cited 2024 Jul. 1];9(12):11060-4. Available from: https://jppipa.unram.ac.id/index.php/jppipa/article/view/5592