Sasipim Limmanee และ Chawalit Ngamcharussrivichai. (2009) Mixed oxides of Ca, Mg, and Zn as heterogeneous base catalysts for transesterification of palm kernel oil. Chulalongkorn University:ม.ป.ท.Sasipim Limmanee และ Chawalit Ngamcharussrivichai. 2009. Mixed oxides of Ca, Mg, and Zn as heterogeneous base catalysts for transesterification of palm kernel oil. ม.ป.ท.:Chulalongkorn University;Sasipim Limmanee และ Chawalit Ngamcharussrivichai. Mixed oxides of Ca, Mg, and Zn as heterogeneous base catalysts for transesterification of palm kernel oil. ม.ป.ท.:Chulalongkorn University, 2009. Print.