National Geologic Map Database
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Title: Geology of Illinois; Physical features, surface deposits; stratigraphical geology, Tertiary deposits, and coal measures; Subcarboniferous limestone; Devonian and Silurian systems
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Author(s): Worthen, A.H.
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Publishing Organization: Illinois State Geological Survey
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Series and Number: Economic Geology v. 1 [p. 1-152]
- Publication Date: 1866
- Cross Section: None
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