Sriharti และ Dadang D. Hidayat. (2020) Quality Improvement of Biogas Fuel through the Adsorption Method. <i>EnvironmentAsia</i>, <i>13</i>(2), 138-149.Sriharti และ Dadang D. Hidayat. "Quality Improvement of Biogas Fuel through the Adsorption Method". EnvironmentAsia 13 (2020):138-149.Sriharti และ Dadang D. Hidayat. Quality Improvement of Biogas Fuel through the Adsorption Method. Thai Society of Higher Education Institutes on Environment:ม.ป.ท. 2020.