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2. Colorado River Basin Water Supply and Demand Study, Phoenix;U.S. Department of Interior Bureau of Reclamation Study Team,2001
3. Quality of Water Colorado River Basin, Phoenix;U.S. Department of Interior Bureau of Reclamation,2005
4. Integrated Urban Water Management in the Tucson, Arizona Metropolitan Area, Integrated Urban Water Management: Arid and Semi-arid Regions;Arnold,2009