Thongthai Witoon และ Metta Chareonpanich. (2010) Synthesis of bimodal porous silica from rice husk ash using chitosan as template and the application as catalyst support for Fischer-Tropsch synthesis. Kasetsart University:ม.ป.ท.Thongthai Witoon และ Metta Chareonpanich. 2010. Synthesis of bimodal porous silica from rice husk ash using chitosan as template and the application as catalyst support for Fischer-Tropsch synthesis. ม.ป.ท.:Kasetsart University;Thongthai Witoon และ Metta Chareonpanich. Synthesis of bimodal porous silica from rice husk ash using chitosan as template and the application as catalyst support for Fischer-Tropsch synthesis. ม.ป.ท.:Kasetsart University, 2010. Print.