Mamman, P., M. Saidu, A. Busari, and S. Sadiku. 2022. “Influences of PH and Temperature on the Anaerobic Fermentation of Groundnut Shell and Cow Dung for Biogas Production”. ARID ZONE JOURNAL OF ENGINEERING, TECHNOLOGY AND ENVIRONMENT 18 (4), 587-96. https://www.azojete.com.ng/index.php/azojete/article/view/672.