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Subject
- Planning and Cadastral266
- Inland Waters228
- Transportation176
- Rivers155
- Hydrology150
- Boundaries149
- Watersheds118
- Groundwater83
- Oceans56
- Location55
- Land use54
- Farming49
- Imagery and Base Maps49
- Agriculture48
- Elevation48
- Urbanization48
- Society44
- Countries40
- Utilities and Communication34
- Administrative and political divisions33