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  1. 1

    Petroleum systems of the United States by Geological Survey (U.S.)

    Published: U.S. G.P.O. ; For sale by the Books and Open-File Reports Section, U.S. Geological Survey, 1988
    Description: iv, 68 pages : illustrations ; 28 cm.
    Government Document Book
  2. 2

    Petroleum systems of the United States

    Published: Department of the Interior, U.S. Geological Survey, 1988
    Description: 1 online resource (iv, 68 pages) : illustrations.
    Government Document eBook