©2013 National Research Council of Thailand
Wijarn Simachaya. 1999. Integrated approaches to water quality management using geographic information systems and the WASP5 simulation model : application to the Tha Chin river basin, Thailand. Faculty of Graduate Studies, University of Guelph;
Wijarn Simachaya. (1999) Integrated approaches to water quality management using geographic information systems and the WASP5 simulation model : application to the Tha Chin river basin, Thailand . University of Guelph/Guelph.
Wijarn Simachaya. Integrated approaches to water quality management using geographic information systems and the WASP5 simulation model : application to the Tha Chin river basin, Thailand. . Guelph:University of Guelph, 1999.
Wijarn Simachaya. (1999) Integrated approaches to water quality management using geographic information systems and the WASP5 simulation model : application to the Tha Chin river basin, Thailand . University of Guelph/Guelph.