Pakorn Wichaihan และ Sanong Ekgasit. (2011) Characterization of surface-modified pet films from industry. Chulalongkorn University:ม.ป.ท.Pakorn Wichaihan และ Sanong Ekgasit. 2011. Characterization of surface-modified pet films from industry. ม.ป.ท.:Chulalongkorn University;Pakorn Wichaihan และ Sanong Ekgasit. Characterization of surface-modified pet films from industry. ม.ป.ท.:Chulalongkorn University, 2011. Print.