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Subject
- Population[remove]177
- Administrative and political divisions44
- Economic conditions29
- Land use21
- Ethnology16
- Maps16
- Industries14
- Phytogeography14
- Population density14
- Languages6
- Migration, Internal6
- Agriculture5
- Mines and mineral resources5
- Historical geography4
- Cities and towns3
- Geology3
- Indians of Central America3
- Metropolitan areas3
- Railroads3
- African Americans2
