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Browse Illinois Mining Investigations - Illinois State Geological Survey by Contributor "Illinois State Geological Survey"
Now showing items 21-32 of 32
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(Urbana, Ill. : Illinois State Geological Survey, 1927)
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PDF (29MB)
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(Urbana, Ill.,, 1920)
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PDF (5MB)
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(Urbana, Ill. : State of Illinois, Dept. of Registration and Education, Division of the State Geological Survey,, 1918)
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PDF (2MB)
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(Urbana, Ill. : State of Illinois, Dept. of Registration and Education, Division of the State Geological Survey,, 1919)
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PDF (1MB)
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(Urbana [Ill.] : University of Illinois,, 1914)
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PDF (4MB)
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(Urbana. Ill.,, 1925)
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PDF (6MB)
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(Urbana : University of Illinois, 1913)
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PDF (6MB)
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PDF (9MB)
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(Urbana, Illinois State geological survey, University of Illinois,, 1916)
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PDF (10MB)
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(Urbana, Illinois State Geological Survey, University of Illinois,, 1917)
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PDF (9MB)
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(Urbana, Ill.,, 1918)
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PDF (2MB)
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(Urbana, Ill.,, 1919)
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PDF (2MB)
Now showing items 21-32 of 32