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Subject
- Nautical charts5
- Navigation5
- Discoveries in geography3
- Discovery and exploration3
- Harbors3
- Caribou2
- Reindeer2
- Aleut language1
- Charts, maps, etc1
- Coasts1
- Crimean War, 1853-18561
- Discovery and exploration, Russian1
- Eskimo languages1
- Fossil fuels1
- Military maps1
- Natural gas1
- Nuclear power plants1
- Ophiolites1
- Petroleum1
- Plate tectonics1