Thikumbhorn Naree และ Chawalit Ngamcharussrivichai. (2011) Heterogeneous base catalysts from natural dolomite for transesterification of vegetable oil. Chulalongkorn University:ม.ป.ท.Thikumbhorn Naree และ Chawalit Ngamcharussrivichai. 2011. Heterogeneous base catalysts from natural dolomite for transesterification of vegetable oil. ม.ป.ท.:Chulalongkorn University;Thikumbhorn Naree และ Chawalit Ngamcharussrivichai. Heterogeneous base catalysts from natural dolomite for transesterification of vegetable oil. ม.ป.ท.:Chulalongkorn University, 2011. Print.