Amornrat Thienprasert. 1997. Factors affecting drug vendors in selling to group purchasers. , Mahidol University;
Amornrat Thienprasert. (1997) Factors affecting drug vendors in selling to group purchasers . Mahidol University/Bangkok.
Amornrat Thienprasert. Factors affecting drug vendors in selling to group purchasers. . Bangkok:Mahidol University, 1997.
Amornrat Thienprasert. (1997) Factors affecting drug vendors in selling to group purchasers . Mahidol University/Bangkok.