Malgwi, D. J., M. A. Musa, and A. N. Jones. 2025. “Biogas Production and Nitrogen Recovery from Cattle and Chicken Dung Through Anaerobic Digestion”. ARID ZONE JOURNAL OF ENGINEERING, TECHNOLOGY AND ENVIRONMENT 21 (1), 279-85. https://www.azojete.com.ng/index.php/azojete/article/view/1030.