Tirawat Chaivanisphol และ Phisan Santitamnont. (2009) Application of Google Earth for updating Metropolitan Waterworks Authority GIS. Chulalongkorn University:ม.ป.ท.Tirawat Chaivanisphol และ Phisan Santitamnont. 2009. Application of Google Earth for updating Metropolitan Waterworks Authority GIS. ม.ป.ท.:Chulalongkorn University;Tirawat Chaivanisphol และ Phisan Santitamnont. Application of Google Earth for updating Metropolitan Waterworks Authority GIS. ม.ป.ท.:Chulalongkorn University, 2009. Print.