Ralf Donner และ Paveena Chaovalitwongse. (2014) DESIGN OF A LOGIC TO SUPPORT LOGISTIC COST EFFICIENT PURCHASING DECISIONS FOR A HARDWARE WHOLESALER. Chulalongkorn University:ม.ป.ท.Ralf Donner และ Paveena Chaovalitwongse. 2014. DESIGN OF A LOGIC TO SUPPORT LOGISTIC COST EFFICIENT PURCHASING DECISIONS FOR A HARDWARE WHOLESALER. ม.ป.ท.:Chulalongkorn University;Ralf Donner และ Paveena Chaovalitwongse. DESIGN OF A LOGIC TO SUPPORT LOGISTIC COST EFFICIENT PURCHASING DECISIONS FOR A HARDWARE WHOLESALER. ม.ป.ท.:Chulalongkorn University, 2014. Print.