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- Subject: IGS Annual Reports3
- 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
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