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Subject
- Real property16
- Geology6
- Roads5
- Railroads4
- Indian reservations3
- Landowners3
- Cities and towns2
- Geology, Stratigraphic2
- Geomagnetism2
- Geophysics2
- Hydrogeology2
- Indians of North America2
- Magnetic anomalies2
- Alluvium1
- Cartes1
- Description and travel1
- Discoveries in geography1
- Discovery and exploration1
- Géologie1
- Highway planning1
