Triana YH, Tanan B, Wong ILK. Pengaruh Penambahan Limbah Ampas Kopi Terhadap KoefisienPermeabilitas Tanah dan Piping. PCEJ [Internet]. 2024 Jan. 17 [cited 2025 Jul. 24];4(3):418-25. Available from: https://ojs.ukipaulus.ac.id/index.php/pcej/article/view/137