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*ARCTIC REGIONS
CONTINENTAL SHELVES
5
CANADA
4
DENMARK
4
Ice and Permafrost
4
NORWAY
4
Snow
4
*SEA ICE
3
ARCTIC OCEAN
3
CLIMATE
3
NATIONAL SECURITY
3
POLLUTION
3
RUSSIA
3
UNITED STATES
3
*RESEARCH MANAGEMENT
2
ALASKA
2
CONGRESS
2
GASES
2
GLOBAL
2
GREENLAND
2
INTERNATIONAL
2
MERCHANT VESSELS
2
MINERALS
2
POLICIES
2
RISK
2
SEA ICE
2
SEASONS
2
SHIPPING
2
SHORES
2
STRATEGY
2
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