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Subject
- Geology51
- Geomagnetism7
- Magnetic anomalies5
- Forests and forestry3
- Groundwater3
- Land capability for agriculture3
- Mines and mineral resources3
- Geochemical prospecting2
- Geophysics2
- Observations2
- Ore deposits2
- Volcanic ash, tuff, etc2
- Volcanoes2
- Aldrich Mountain Quad1
- Basalt1
- Continental margins1
- Continental shelf1
- Earthquakes1
- Faults (Geology)1
- Floods1
