Natta Asvathavornvanit และ Paveena Chaovalitwongse. (2013) An application of transparency in up stream supply chain of Thai frozen food company. Chulalongkorn University:ม.ป.ท.Natta Asvathavornvanit และ Paveena Chaovalitwongse. 2013. An application of transparency in up stream supply chain of Thai frozen food company. ม.ป.ท.:Chulalongkorn University;Natta Asvathavornvanit และ Paveena Chaovalitwongse. An application of transparency in up stream supply chain of Thai frozen food company. ม.ป.ท.:Chulalongkorn University, 2013. Print.