Nguyen Trung Thanh. (2016) Amine-bearing activated rice husk ash for CO2 and H2S gas removals from biogas. <i>KKU Engineering Journal</i>, <i>43</i>(S3), 396-398.Nguyen Trung Thanh. "Amine-bearing activated rice husk ash for CO2 and H2S gas removals from biogas". KKU Engineering Journal 43 (2016):396-398.Nguyen Trung Thanh. Amine-bearing activated rice husk ash for CO2 and H2S gas removals from biogas. Faculty of Engineering, Khon Kaen University:ม.ป.ท. 2016.