Powell, John Wesley,; 1834-1902. Report on the Lands of the Arid Region of the United States, with a More Detailed Account of the Lands of Utah. With Maps.. Washington. UNT Digital Library. http://digital.library.unt.edu/ark:/67531/metadc125/. Accessed May 16, 2012.
Report on the Lands of the Arid Region of the United States, with a More Detailed Account of the Lands of Utah. With Maps.
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