Supalerk Klanprasert. (2007) Model development for Ping and Wang watershed classification. Mahidol University,:ม.ป.ท.Supalerk Klanprasert. 2007. Model development for Ping and Wang watershed classification. ม.ป.ท.:Mahidol University,;Supalerk Klanprasert. Model development for Ping and Wang watershed classification. ม.ป.ท.:Mahidol University, 2007. Print.