Piyarat Tangkasemchit. (1998) <The> application of web database for executive information system case study : Levi's products. Mahidol University,:ม.ป.ท.Piyarat Tangkasemchit. 1998. <The> application of web database for executive information system case study : Levi's products. ม.ป.ท.:Mahidol University,;Piyarat Tangkasemchit. <The> application of web database for executive information system case study : Levi's products. ม.ป.ท.:Mahidol University, 1998. Print.