Ratiprach Aiamthongkham และ Ampira Charoensaeng. (2015) Microemulsion based residual oil recovery for spent bleaching earth from biodiesel production. Chulalongkorn University:ม.ป.ท.Ratiprach Aiamthongkham และ Ampira Charoensaeng. 2015. Microemulsion based residual oil recovery for spent bleaching earth from biodiesel production. ม.ป.ท.:Chulalongkorn University;Ratiprach Aiamthongkham และ Ampira Charoensaeng. Microemulsion based residual oil recovery for spent bleaching earth from biodiesel production. ม.ป.ท.:Chulalongkorn University, 2015. Print.