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Ice and Permafrost
2
Physical and Dynamic Oceanography
Snow
2
*ARCTIC REGIONS
1
*COAST GUARD
1
*CONTINENTAL SHELVES
1
*ICEBREAKERS
1
*MERCHANT VESSELS
1
*OCEANOGRAPHIC DATA
1
*SEA ICE
1
ANTARCTIC REGIONS
1
ATMOSPHERIC TEMPERATURE
1
CARGO
1
CARGO SHIPS
1
COMMERCE
1
CONCENTRATION(COMPOSITION)
1
COOPERATION
1
CORES
1
CUTTERS
1
DAILY OCCURRENCE
1
DEFENSE SYSTEMS
1
FUELS
1
GREENLAND
1
HEALY(MERCHANT VESSEL)
1
ICE
1
ICE REPORTING
1
ICEBERGS
1
ICEBREAKERS
1
LAW ENFORCEMENT
1
MAPS
1
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