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Geological and Geographical Survey of Th Libros

    Preliminary Report of the United States Geological Survey of Montana and Portions of Adjacent Territories; Being a Fifth Annual Report of Progress. by
    Final Report of the United States Geological Survey of Nebraska and Portions of the Adjacent Territories, Made Under the Direction of the Commissioner
    12th Annual Report of the United States Geological and Geographical Survey of the Territories ... by F. V. Hayden, United States Geologist ...
    Preliminary Field Report of the United States Geological Survey of Colorado and New Mexico, Conducted Under the Authority of Hon. J.D. Cox, Secretary
    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.