FEBRIANTI A, MUNFARIDA I, UTAMA TT. Application of Coconut Shell Activated Carbon Technology for Groundwater Treatment in Roudlotut Tholibin Islamic Boarding School. IJESSS [Internet]. 2025 Jan. 31 [cited 2026 Jun. 6];6(1):121-6. Available from: https://staging.journalkeberlanjutan.com/index.php/ijesss/article/view/1309