Preliminary Field Report of the United States Geological Survey of Colorado and New Mexico, Conducted Under the Authority of Hon. J.D. Cox, Secretary
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Cărți de Geological and Geographical Survey of Th
Report on the Geology of the Eastern Portion of the Uinta Mountains and a Region of Country Adjacent Thereto. with Atlas. by J.W. Powell.
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Final Report of the United States Geological Survey of Nebraska and Portions of the Adjacent Territories, Made Under the Direction of the Commissioner
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