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General Information

  • Title: Pleistocene stratigraphy of Illinois
  • Author(s): Willman, H.B., and Frye, J.C.
  • Publishing Organization: Illinois State Geological Survey
  • Series and Number: Bulletin no. 94 [204 p.]
  • Publication Date: 1970
  • Map Scale: 1:500,000
  • Cross Section: None
  • North Latitude: 42° 30' 30" N (42.5083)
  • South Latitude: 39° 19' 8" N (39.3189)
  • East Longitude: 87° 31' 33" W (-87.5258)
  • West Longitude: 90° 4' 53" W (-90.0813)
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