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General Information

  • Title: The geology of the Upper Mississippi Valley zinc-lead district
  • Author(s): Heyl, A.V., Agnew, A.F., Lyons, E.J., Behre, C.H., and Flint, A.E.
  • Publishing Organization: U.S. Geological Survey
  • Series and Number: Professional Paper 309
  • Publication Date: 1959
  • Map Scale: 1:126,720
  • Cross Section: Yes
  • North Latitude: 43° 13' 19" N (43.2219)
  • South Latitude: 42° 11' 11" N (42.1864)
  • East Longitude: 89° 23' 30" W (-89.3917)
  • West Longitude: 91° 16' 0" W (-91.2667)
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