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Subject
- Geology29
- Mines and mineral resources22
- Maps8
- History4
- Mapa geoloĢgico4
- Railroads4
- Boundaries3
- Coasts3
- Gold mines and mining3
- Harbors3
- Navigation3
- Nautical charts2
- Population2
- South African War, 1899-19022
- Administrative and political divisions1
- Domes (Geology)1
- Fishing1
- Geology, Stratigraphic1
- Geology, Structural1
- Greenstone belts1
