Phatcharaporn Chaivisad และ Parames Chutima. (2013) ENERGY CONSERVATION MANAGEMENT FOR PLASTIC RESIN MANUFACTURERS. Chulalongkorn University:ม.ป.ท.Phatcharaporn Chaivisad และ Parames Chutima. 2013. ENERGY CONSERVATION MANAGEMENT FOR PLASTIC RESIN MANUFACTURERS. ม.ป.ท.:Chulalongkorn University;Phatcharaporn Chaivisad และ Parames Chutima. ENERGY CONSERVATION MANAGEMENT FOR PLASTIC RESIN MANUFACTURERS. ม.ป.ท.:Chulalongkorn University, 2013. Print.