The Effect of Grinding on Biogas Production from Rice Husk Waste During Solid State Anaerobic Digestion (SS-AD)Syafrudin, Winardi Dwi Nugraha, Aisyah Bahrani, Hashfi Hawali Abdul Matin and BudiyonoE3S Web Conf., 202 (2020) 08004DOI: https://doi.org/10.1051/e3sconf/202020208004