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Evolution of the Conservation Movement, 1850-1920
The physical geology of the Grand Canyon District, by Capt. Clarence E. Dutton, Ordnance Corps, U.S.A. From Annual report of the United States Geological Survey to the Secretary of the Interior, 1880-81.
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Image 127 of 160, The physical geology of the Grand Canyon District,
Back to Full Text Display | Conservation Home | Highest Resolution Image (TIFF - 138K) | Full Illustration ( .pcx - 138K)
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