Mahushiab, Debora J, Alfred NN Muzukaa, and Revocatus L Machunda. “Optimization of Biogas Production Process in Solid State Digesters in Semiarid Areas of Northern Tanzania”. Tanzania Journal of Science 44, no. 3 (April 18, 2021): 205–213. Accessed May 18, 2024. https://tjs.udsm.ac.tz/index.php/tjs/article/view/227.