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Subject
- Real property13
- Geology11
- Roads8
- Geology, Structural4
- Railroads4
- Residential real estate4
- Gas wells3
- Oil wells3
- Real estate development3
- Federal aid to transportation2
- Landowners2
- Mines and mineral resources2
- Nautical charts2
- Discoveries in geography1
- Discovery and exploration1
- Ethnology1
- Fire risk assessment1
- Geology, Stratigraphic1
- History1
- Indians of North America1
