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Subject
- Geographic Subject: Indiana438
- Topical Subject: IGS Annual Reports180
- Topical Subject: Roads178
- Topical Subject: Geology103
- Topical Subject: Soils97
- Topical Subject: Mines and mineral resources70
- Topical Subject: Real property57
- Topical Subject: Landowners56
- Geographic Subject: Monroe County (Ind.)55
- Topical Subject: Land use55
- Topical Subject: Geology, Stratigraphic54
- Geographic Subject: Gibson County (Ind.)47
- Topical Subject: Administrative and political divisions42
- Geographic Subject: Bloomington (Ind.)40
- Geographic Subject: Indianapolis (Ind.)39
- Topical Subject: Classification35
- Geographic Subject: Lake County (Ind.)32
- Geographic Subject: Posey County (Ind.)30
- Topical Subject: Lakes30
- Topical Subject: Vegetation mapping30