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  1. The late Woodfordian Jules soil and associated Molluscan faunas,
    By: Frye, John Chapman, - Illinois State Geological Survey.
    Publication info: Urbana,1974.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Fauna  Glacial epoch  Grond  Illinois  Mollusks, Fossil  Weekdieren  
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