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  1. Contributions to Pennsylvanian paleobotany: Notes on the Lepidocarpaceae.
    By: Schopf, James Morton,
    Publication info: Urbana,1941.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Carboniferous  Geology, Stratigraphic  Lepidocarpaceae  Paleobotany  Pennsylvanian  
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