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- Subject: IGS Annual Reports[remove]5
- Subject: Mines and mineral resources3
- Geographic Subject: Indiana2
- Subject: Geology, Stratigraphic2
- Geographic Subject: Bone Bank Site (Ind.)1
- Geographic Subject: Crawford County (Ind.)1
- Geographic Subject: Dearborn County (Ind.)1
- Geographic Subject: Hamilton County (Ohio)1
- Geographic Subject: Posey County (Ind.)1
- Geographic Subject: Wyandotte Cave (Ind.)1
- Subject: Antiquities1
- Subject: Caves1
- Subject: Coal mines and mining1
- Subject: Fortification, Prehistoric1
- Subject: Geology1
- Subject: Indians of North America1
- Subject: Mississippian culture1
- Subject: Mounds1