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  1. The geological and natural history survey of Minnesota : the twelfth annual report for the year 1883 / N.H. Winchell.
    By: Winchell, N. H.
    Publication info: Minneapolis :Johnson, Smith & Harrison,1884.
    Contributed by: Smithsonian Libraries
    Subjects: Fossils  Geology  Granite  Minnesota  Natural history  
    BHL Collections: Smithsonian Libraries
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