OMER, Abdeen. Efficient Use of Cesspool and Biogas for Sustainable Energy Generation: Recent Development and Perspectives. Agricultural Extension Journal (AEXTJ), [S.l.], v. 3, n. 2, june 2019. ISSN 2521-0408. Available at: <http://aextj.com/index.php/aextj/article/view/159>. Date accessed: 18 sep. 2019.