Preliminary hydrogeologic assessment near Tassi and Pakoon Springs, western part of Grand Canyon-Parashant National Monument, Arizona / by Margot Truini ; prepared in cooperation with the National Park Service.
- Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2013.
- Government document
1 online resource (iv, 12 pages) : color illustrations, color maps.
- Scientific investigations report ; 2012-5276.
Scientific investigations report ; 2012-5276
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