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Subject
- Coal26
- Geology20
- Groundwater14
- Limonite7
- Geomagnetism6
- Geology, Stratigraphic4
- Marine sediments3
- Mines and mineral resources3
- Water resources development3
- Bathymetric maps2
- Gravity anomalies2
- Lunar geology2
- Remote-sensing maps2
- Aquifers1
- Cenozoic Geologic Period1
- Devonian Geologic Period1
- Geophysical research1
- Hydrology1
- Isotope geology1
- Magnetic anomalies1
