Coenraad R, Wiratno, Karelius K. Perancangan Filter Penjernih Air Sungai Kahayan Berbasis Pasir Silika Dan Lempung Alam Asal Kalimantan Tengah: Design of Kahayan River Water Treatment Filter Based Silica Sand and Natural Clay of Central Kalimantan . JJMS [Internet]. 2020 May 11 [cited 2024 Nov. 21];1(2):70-6. Available from: https://e-journal.upr.ac.id/index.php/JMS/article/view/543