Search results for ‘Richard Porter Sheldon’

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      Cover image for Geochemistry of Uranium in Phosphorites and Black Shales of the Phosphoria Formation
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      Geochemistry of Uranium in Phosphorites and Black Shales of the Phosphoria Formation

      Richard Porter Sheldon

      The United States Geological Survey (USGS) is a scientific organization created in 1879, and is part of the U.S. government. Their scientists explore our environment and ecosystems, to determine the…

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      Cover image for Physical Stratigraphy of the Phosphoria Formation in Northwestern Wyoming
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      Physical Stratigraphy of the Phosphoria Formation in Northwestern Wyoming

      Richard Porter Sheldon

      The United States Geological Survey (USGS) is a scientific organization created in 1879, and is part of the U.S. government. Their scientists explore our environment and ecosystems, to determine the…

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      Cover image for Progress Report on Investigations of Western Phosphate Deposits: Geological Survey Circular, No. 297
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      Progress Report on Investigations of Western Phosphate Deposits: Geological Survey Circular, No. 297

      R W Swanson,V E McKelvey,Richard Porter Sheldon

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      Cover image for Stratigraphic Sections of the Phosphoria Formation in Wyoming, 1951: Geological Survey Circular, No. 324
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      Stratigraphic Sections of the Phosphoria Formation in Wyoming, 1951: Geological Survey Circular, No. 324

      T M Cheney,Richard Porter Sheldon,R G Waring

      $62.99

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