Subsurface geology and coal resources of the Pennsylvanian system in Crawford and Lawrence Counties, Illinois
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Word Count
4,250 words, Guess
Page Count
17 pages
Identifiers
- OCLC Control Number4222392
- Open LibraryOL45150547M
Subjects
Times
Series Statement
- Illinois. State Geological Survey. Report of investigations -- 193
- Report of investigations (Illinois State Geological Survey) -- no. 193.
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