Abowei M.F.N, Akinwande A.C, and Akpa J.G. “Design of Cow-Dung and Grass- Clippings Isothermal Continuous Stirred Co-Digester for Biogas Production”. International Journal of Advances in Scientific Research and Engineering (IJASRE), ISSN:2454-8006, DOI: 10.31695/IJASRE 5, no. 3 (March 19, 2019): 96–109. Accessed November 22, 2024. https://ijasre.net/index.php/ijasre/article/view/137.