Itsarapap Saneewong และ Chawalit Ngamcharussrivichai. (2011) Effect of N₂ bubbles on transesterification of vegetable oil in a fixed bed ractor. Chulalongkorn University:ม.ป.ท.Itsarapap Saneewong และ Chawalit Ngamcharussrivichai. 2011. Effect of N₂ bubbles on transesterification of vegetable oil in a fixed bed ractor. ม.ป.ท.:Chulalongkorn University;Itsarapap Saneewong และ Chawalit Ngamcharussrivichai. Effect of N₂ bubbles on transesterification of vegetable oil in a fixed bed ractor. ม.ป.ท.:Chulalongkorn University, 2011. Print.