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Subject
- Geology207
- Coal163
- Groundwater94
- Geomagnetism76
- Magnetic anomalies60
- Mines and mineral resources49
- Geochemistry18
- Water quality17
- Aquifers15
- Geology, Stratigraphic15
- Quality14
- Landslides13
- Maps13
- Sediments (Geology)11
- Gravity anomalies9
- Limonite8
- Water table8
- Geochemical prospecting6
- Remote-sensing maps6
- Water resources development6
