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- Geographic Subject: Perry County (Ind.)[remove]7
- Geographic Subject: Spencer County (Ind.)[remove]7
- Geographic Subject: Dubois County (Ind.)3
- Geographic Subject: Warrick County (Ind.)3
- Topical Subject: Coal2
- Topical Subject: IGS Annual Reports2
- Geographic Subject: Daviess County (Ky.)1
- Geographic Subject: Hancock County (Ind.)1
- Geographic Subject: Indiana1
- Topical Subject: Geology1
- Topical Subject: Limestone1
- Topical Subject: Road materials1