Awode, Ayoola E., Josiah O. Babatola, and Adedeji A. Adelodun. “Effect of Biochar on Biogas Yield of Poultry Wastes”. Environmental Protection Research 2, no. 2 (June 28, 2022): 62–74. Accessed March 29, 2024. https://ojs.wiserpub.com/index.php/EPR/article/view/1349.