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Subject
- Topical Subject: IGS Annual Reports4
- Geographic Subject: Indiana3
- Topical Subject: Coal3
- Geographic Subject: Perry County (Ind.)2
- Geographic Subject: Spencer County (Ind.)2
- Geographic Subject: Warrick County (Ind.)2
- Topical Subject: Geology2
- Geographic Subject: Allen County (Ind.)1
- Geographic Subject: Bartholomew County (Ind.)1
- Geographic Subject: Crawford County (Ind.)1
- Geographic Subject: Decatur County (Ind.)1
- Geographic Subject: Dubois County (Ind.)1
- Geographic Subject: Gibson County (Ind.)1
- Geographic Subject: Orange County (Ind.)1
- Geographic Subject: Pike County (Ind.)1
- Geographic Subject: Rush County (Ind.)1
- Geographic Subject: Shelby County (Ind.)1
- Topical Subject: Geology, Stratigraphic--Devonian1
- Topical Subject: Geology, Stratigraphic--Silurian1
- Topical Subject: Glacial landforms1