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- Geology6
- Roads4
- Administrative and political divisions3
- Coal3
- Real property3
- Geology, Structural2
- Residential real estate2
- Buildings1
- Cartes1
- Census districts1
- Cities and towns1
- Coal mines and mining1
- Convents1
- Description and travel1
- Devonian Geologic Period1
- Ecclesiastical geography1
- Geology, Stratigraphic1
- GeĢologie1
- Historical geography1
- History1
