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Subject
- Geology92
- Mines and mineral resources16
- Gravity6
- Navigation3
- Population3
- Cartes2
- Economic conditions2
- Engineering geology2
- Ethnology2
- GeĢologie2
- Harbors2
- Outdoor recreation2
- Phytogeography2
- Administrative and political divisions1
- Faults (Geology)1
- Forest ecology1
- Forest reserves1
- Forests and forestry1
- Gas fields1
- Geology, Stratigraphic1
