Padang, Israel, and Zwengli Lodi Honta. “PEMANFAATAN ABU LIMBAH KULIT KOPI TORAJA SEBAGAI SUBSTITUSI PARSIAL SEMEN TERHADAP KUAT TEKAN BETON”. Teaching and Learning Journal of Mandalika (Teacher) e- ISSN 2721-9666 5, no. 1 (May 14, 2024): 245-252. Accessed June 29, 2025. https://ojs.cahayamandalika.com/index.php/teacher/article/view/2995.