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Subject
- Geology206
- Aquifers51
- Geology, Stratigraphic47
- Groundwater47
- Geology, Structural38
- Mines and mineral resources34
- Geochemical prospecting17
- River sediments13
- Census districts12
- Hydrogeology12
- Submarine topography12
- Water table12
- Faults (Geology)9
- Housing9
- Marine sediments9
- Continental margins7
- Water quality7
- Gold ores6
- Gravity anomalies6
- Geochemistry5