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[edit] Summary

Geology of Washington, Oregon and Idaho on the northwest United States[1]

United States Geological Survey

[edit] Notes

  1. ^ Whitehead, R. L. (1994). Ground water atlas of the United States : Idaho, Oregon, Washington, Hydrologic investigations atlas. Reston, VA: U.S. Geological Survey. HA 730-H. Retrieved on 2007-04-11. 

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current13:14, 11 April 2007900×634 (315 KB)Robbiegiles (Talk | contribs) (Geology of Washington, Oregon and Idaho on the northwest United States<ref>{{cite book | last = Whitehead | first = R. L. | title = Ground water atlas of the United States : Idaho, Oregon, Washington | url = http://capp.water.usgs.gov/gwa/ch_h/index.)

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