Perdanie, E. P.; Rahmadani, R.; Oktaviannoor, H.; Alawiyah, T. Pemanfaatan Arang Aktif Tongkol Jagung (Zea Mays) Dalam Menurunkan Kesadahan Pad Air Sumur Di Kabupaten Katingan: Ultilization of Corn COB Activated Charcoal (Zea Mays) in Reducing the Hardness of Well Water in Katingan Regency. J Surya Medika 2024, 10 (3), 88-94. https://doi.org/10.33084/jsm.v10i3.8969.