- Publication venue
- Urbana, Ill: Illinois State Geological Survey
- Publication date
- 01/10/1974
- Field of study
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- Publication venue
- Urbana, Ill: Illinois State Geological Survey
- Publication date
- 01/10/1975
- Field of study
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- Publication venue
- Champaign, IL : Illinois Dept. of Natural Resources, Illinois State Geological Survey
- Publication date
- 01/01/1997
- Field of study
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- Publication venue
- Champaign, IL : Illinois State Geological Survey
- Publication date
- 01/01/2007
- Field of study
Get PDFIncludes bibliographical references (p. 66-69)
- Publication venue
- Champaign, Ill.: Illinois State Geological Survey, Prairie Research Institute
- Publication date
- 01/01/2000
- Field of study
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- Publication venue
- Champaign, IL: Illinois State Geological Survey
- Publication date
- 01/01/1994
- Field of study
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- Publication venue
- Urbana, [Ill.] : Illinois State Geological Survey,
- Publication date
- 01/01/1971
- Field of study
Get PDFCover title."Geological science field trip.""September 25, 1971."Host: Brown County Community High School
- Publication venue
- Champaign, Ill.: Illinois State Geological Survey
- Publication date
- 01/01/1981
- Field of study
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- Publication venue
- Illinois State Geological Survey
- Publication date
- 01/01/1983
- Field of study
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- Publication venue
- Champaign, IL : Illinois State Geological Survey
- Publication date
- 01/01/1982
- Field of study
Get PDFIncludes bibliographical references (p. 21)