The Influence of Microbial Consortium and C/N Ratio to Biogas Production from Rice Husk Waste by Using Solid State Anaerobic Digestion (SS-AD)HashfiHawali Abdul Matin and HadiyantoE3S Web Conf., 73 (2018) 01018DOI: https://doi.org/10.1051/e3sconf/20187301018