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Alaska
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Alpine tundra ecology
2
Archaeology
Design and construction
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Greenland
2
Greenland waters
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History
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Human migration
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Icebreakers
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Kamchatka
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Poluostrov
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Qeqertarsuaq region
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Research
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Research stations
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Russian Federation
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Ship propulsion systems
2
Ship steering systems
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Size
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Tundra ecology
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