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Subject
- Geology254
- Coal149
- Groundwater114
- Geomagnetism91
- Magnetic anomalies86
- Mines and mineral resources64
- Geology, Stratigraphic34
- Geochemical prospecting27
- Geology, Structural27
- Aquifers22
- Geochemistry19
- Water quality19
- Maps16
- Landslides15
- Quality13
- Roads13
- Sediments (Geology)13
- Gravity anomalies12
- Marine sediments12
- Submarine topography11
