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  1. By: Bain, Harry Foster, - Geological Survey (U.S.)
    Publication info: Washington, [D.C.] :Govt. Print. Off.,1905.
    Holding Institution: Morris Library, Southern Illinois University Carbondale (archive.org)
    Subjects: Fluorspar  Geology  Illinois  
  2. By: Schuberth, Christopher J. - Cashatt, Everett D. - Illinois State Museum.
    Publication info: Springfield, Ill. :Illinois State Museum, Education Section,[1985]
    Holding Institution: University Library, University of Illinois Urbana Champaign
    Subjects: Biotic communities  Cave-in-Rock Region  Fluorspar  Geology  Guidebooks  Illinois