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Subject
- Geology5
- Maps4
- Mines and mineral resources4
- Railroads3
- Transportation3
- Ore deposits2
- Politics and government2
- Shipping2
- Steamboat lines2
- Telegraph lines2
- Campaigns1
- Cartes1
- Description and travel1
- Franco-Prussian War, 1870-18711
- Geography1
- Historical geography1
- History1
- History, Military1
- Iron ores1
- Military campaigns1
