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National Geologic Map Database

General Information

  • Title: Geological and geophysical survey of fluorspar areas in Hardin County, Illinois
  • Author(s): Currier, L.W., Wagner, O.E., and Hubbert, M.K.
  • Publishing Organization: U.S. Geological Survey
  • Series and Number: Bulletin 942
  • Publication Date: 1944
  • Map Scale: 1:6,000
  • Cross Section: None
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.