Geology and ground-water resources of the Valley of Gila River and San Simon Creek, Graham County, Arizona; with a section on the Chemical character of the ground water

1938 ◽  
Fact Sheet ◽  
2000 ◽  
Author(s):  
Alan H. Welch ◽  
Sharon A. Watkins ◽  
Dennis R. Helsel ◽  
Michael J. Focazio

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