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    Stratigraphy of the Pierre Shale, Valley City and Pembina Mountain areas, North Dakota by Gill, James R. (James Rogers), 1922-1972

    Published: U.S. Govt. Print. Off., 1965
    Description: 20 pages : illustrations, maps. ; 29 cm.
    Government Document Book
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    Stratigraphy of the Pierre Shale, Valley City and Pembina Mountain areas, North Dakota
  2. 2

    Studies of the Mowry shale (Cretaceous) and contemporary formations in the United States and Canada by Reeside, John B., Jr., (John Bernard), 1889-1958

    Published: U. S. Govt. Print. Off., 1960
    Description: iv, 126 pages : illustrations, maps, diagrams (2 folded in pocket) ; 29 cm.
    Book
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    Studies of the Mowry shale (Cretaceous) and contemporary formations in the United States and Canada

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