Piyavadee Srivichai and Orathai Chavalparit (2020) “OPTIMIZATION OF BIOGAS PRODUCTION FROM CO-DIGESTION OF WASTE ACTIVATED SLUDGE AND MODIFIED TAPIOCA STARCH SLUDGE ”, GEOMATE Journal, 18(67), pp. 148–155. Available at: https://geomatejournal.com/geomate/article/view/505 (Accessed: 3 May 2024).