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  1. 1

    Paleozoic and Mesozoic stratigraphy of the northern part of the Ruby Range, southwestern Montana by Tysdal, Russell G.

    Published: U.S. Govt. Print. Off., 1976
    Description: iv, 26 pages : illustrations ; 24 cm.
    Government Document Book
  2. 2

    Paleozoic and Mesozoic stratigraphy of the northern part of the Ruby Range, southwestern Montana by Tysdal, Russell G.

    Published: United States Department of the Interior, Geological Survey, 1976
    Description: 1 online resource (iv, 126 pages) : illustrations.
    Government Document eBook