“GROUNDWATER TESTING TESTING THE CHEMICAL AND PHYSICAL PROPERTIES OF GROUNDWATER: PENGUJIAN SIFAT KIMIA DAN FISIKA AIRTANAH ” (2024) JISTECH: Journal of Information Science and Technology, 13(2). Available at: https://www.jistechunipa.com/index.php/istech/article/view/428 (Accessed: 31 August 2026).