Mussen Lamoh, M., Jackson Joy, E., Rashid, M., Islam, S., & Hashmi, S. (2020). Biogas Production Optimization from Palm Oil Mill Effluent: Experiments with Anaerobic Reactor . International Journal of Integrated Engineering, 12(3), 261-270. Retrieved from https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/5475