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General Information

  • Title: Summary appraisals of the nation's ground-water resources - upper Mississippi region
  • Author(s): Bloyd, R.M.
  • Publishing Organization: U.S. Geological Survey
  • Series and Number: Professional Paper 813-B
  • Publication Date: 1975
  • Map Scale: 1:6,000,000
  • Cross Section: None
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.