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Subject
- Geology36
- Mines and mineral resources19
- Mapa geológico4
- Nautical charts4
- Coasts3
- Administrative and political divisions2
- Portuguese2
- Cartes1
- Colonies1
- Cork oak1
- Discoveries in geography1
- Discovery and exploration1
- Faults (Geology)1
- Forests and forestry1
- Geologie1
- Geology, Stratigraphic1
- Geology, Structural1
- Géologie1
- Groundwater1
- Harbors1
