Books by Illinois State Geological Survey
- Alias University of Illinois (Urbana-Champaign campus). State Geological Survey
- Alias ISGS
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Displaying results 1–3
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Guide to the Geologic Map of Illinois
Illinois State Geological Survey
702 downloads
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Guide to Rocks and Minerals of Illinois
Illinois State Geological Survey
585 downloads
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Inside Illinois: Mineral Resources
Illinois State Geological Survey
289 downloads
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Displaying results 1–3
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