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  1. Enomoto, Catherine B. [Other] ; United States Geological Survey

    Geochemical and mineralogical sampling of the devonian shales in the Broadtop Synclinorium, Appalachian Basin, in Virginia, West Virginia, Maryland, and Pennsylvania

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    Reston, Virginia: U.S. Department of the Interior, U.S. Geological Survey, 2015

    Published in: United States Geological Survey: Open-file report ; 2015,1061

  2. Román-Colón, Yomayra A. [Author]; Ruppert, Leslie F. [Author]

    Central Appalachian Basin natural gas database : distribution, composition, and origin of natural gases

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    Reston, Virginia: U.S. Department of the Interior, U.S. Geological Survey, 2014

    Published in: United States Geological Survey: Open-file report ; 2014,1207