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Ice and Permafrost
9
Snow
(*SEA ICE
4
ARCTIC OCEAN
4
ARCTIC OCEAN)
4
FREEZING
4
GREENLAND SEA
4
MELTING
4
Physical and Dynamic Oceanography
4
(*AERIAL RECONNAISSANCE
3
*SEA ICE
3
CANADA
3
DATA ACQUISITION
3
ICE ISLANDS
3
SEA ICE)
3
SEA WATER
3
TRANSLATIONS
3
USSR
3
*ARCTIC REGIONS
2
ARCTIC REGIONS
2
CRACKS
2
DATA PROCESSING
2
DISTRIBUTION
2
NAVAL AIRCRAFT
2
OBSERVATION AIRCRAFT
2
STRAITS
2
WEATHER FORECASTING
2
(*ICE ISLANDS
1
*ARCTIC OCEAN
1
*ICE FORECASTING
1
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Arctic
Arctic Ocean
Ice
9
North Pole
permafrost
Sea ice
8
Arctic Basin
5
Greenland
4
Greenland Sea
4
Banks Island
2
Canadian Archipelago
2
Denmark Strait
2
Northern Sea Route
2
Parry Channel
2
Arctic Archipelago
1
Baffin
1
Baffin Bay
1
Baffin Island
1
Kane Basin
1
Lincoln Sea
1
Northwest passage
1
Robeson channel
1
Smith sound
1
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