Chanut Polsingkhorn และ Amorn Petsom. (2009) Methanolysis and analysis of isophthalic acid in PET resin by gas chromatography. Chulalongkorn University:ม.ป.ท.Chanut Polsingkhorn และ Amorn Petsom. 2009. Methanolysis and analysis of isophthalic acid in PET resin by gas chromatography. ม.ป.ท.:Chulalongkorn University;Chanut Polsingkhorn และ Amorn Petsom. Methanolysis and analysis of isophthalic acid in PET resin by gas chromatography. ม.ป.ท.:Chulalongkorn University, 2009. Print.