• Dissolved-solids in the Southwestern United States : Spatial Distribution (PDF file 6.5 MB)
• Dissolved-solids in the Southwestern United States : Sources, Transport, and Accumulation ( PDF file 5.1 MB)
• Developing a Framework of Possible Factors that Affect Water Quality in Basin-fill Aquifers of the Southwestern United States (PDF file 12.8 MB)
• Assessment of Shallow Ground-Water Quality in Agricultural and Urban Areas Within the Arid and Semiarid Western United States (ppt file 1.0 MB)

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