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You searched for: Creator Illinois State Geological Survey Remove constraint Creator: Illinois State Geological Survey Creator Johnson, Gerald H. Remove constraint Creator: Johnson, Gerald H. Type Image Remove constraint Type: Image Publisher Indiana. Geological Survey Remove constraint Publisher: Indiana. Geological Survey

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  • Geologic map of the 1¬¨‚àû x 2¬¨‚àû Danville quadrangle, Indiana and Illinois, showing bedrock and unconsolidated deposits