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 . Jurnal Jejaring Matematika dan Sains, [S. l.], v. 1, n. 2, p. 70–76, 2020. DOI: 10.36873/jjms.v1i2.213. Disponível em: https://e-journal.upr.ac.id/index.php/JMS/article/view/543. Acesso em: 6 dec. 2022.