Tembo Costain, and Luwaya Edwin. “Utilization of Anaerobic Co-Digestion for Biogas Production for Institutional Cooking: A Case of Nkumbi International College”. Engineering And Technology Journal 9, no. 5 (May 8, 2024): 3957–3963. Accessed November 22, 2024. https://everant.org/index.php/etj/article/view/1307.