Maneerat Wangsiripaisarn และ Varawut Tangpasuthadol. (2015) SYNTHESIS OF QUATERNARY AMMONIUM CHITOSAN IN IONIC LIQUID. Chulalongkorn University:ม.ป.ท.Maneerat Wangsiripaisarn และ Varawut Tangpasuthadol. 2015. SYNTHESIS OF QUATERNARY AMMONIUM CHITOSAN IN IONIC LIQUID. ม.ป.ท.:Chulalongkorn University;Maneerat Wangsiripaisarn และ Varawut Tangpasuthadol. SYNTHESIS OF QUATERNARY AMMONIUM CHITOSAN IN IONIC LIQUID. ม.ป.ท.:Chulalongkorn University, 2015. Print.