Turdialiyev Umid Muxtoraliyevich, Nasirov Ilham Zakirovich-, and Abbasov Saidolimhon Jaloliddin ugli. “BIOGAS IS AN ALTERNATIVE ENERGY SOURCE”. Journal of new century innovations 18, no. 5 (December 12, 2022): 157–165. Accessed February 17, 2025. https://newjournal.org/new/article/view/1436.