Piyavadee Srivichai, & Orathai Chavalparit. (2020). OPTIMIZATION OF BIOGAS PRODUCTION FROM CO-DIGESTION OF WASTE ACTIVATED SLUDGE AND MODIFIED TAPIOCA STARCH SLUDGE . GEOMATE Journal, 18(67), 148–155. Retrieved from https://geomatejournal.com/geomate/article/view/505