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Subject
- Population[remove]39
- Economic conditions24
- Land use17
- Phytogeography13
- Ethnology11
- Industries10
- Maps8
- Administrative and political divisions6
- Languages4
- Mines and mineral resources4
- Agriculture3
- Indians of Central America3
- Migration, Internal3
- Land use, Rural2
- Natural resources2
- Oil fields2
- Tribes2
- Ethiopia1
- Forests and forestry1
- Gas fields1
