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Subject
- Groundwater35
- Geology17
- Water chemistry8
- Granite7
- Magnetic anomalies7
- Volcanic ash, tuff, etc7
- Basalt6
- Geomagnetism5
- Rocks, Sedimentary4
- Mines and mineral resources3
- Engineering geology2
- Hydrology2
- Iron ores2
- Landslides2
- Molybdenum ores2
- Remote-sensing maps2
- Rocks, Siliceous2
- Sediments (Geology)2
- Stream measurements2
- Uranium ores2
