“Enhanced Biogas Production Of A Revamped Fixed Film Anaerobic Digester On Raw Spent Wash- A Case Study ”. Journal of Indian Association for Environmental Management (JIAEM) 41, no. 1 (April 30, 2023): 79–82. Accessed May 15, 2026. https://or.niscpr.res.in/index.php/JIAEM/article/view/1022.