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(*SEA ICE
2
ARCTIC OCEAN)
2
CANADA
GREENLAND SEA
2
Ice and Permafrost
2
Snow
2
(*AERIAL RECONNAISSANCE
1
(*ICE ISLANDS
1
ARCTIC REGIONS
1
BAFFIN ISLAND
1
C-121 AIRCRAFT
1
CRACKS
1
DISTRIBUTION
1
DIURNAL VARIATIONS
1
DRIFT)
1
FREEZING
1
MELTING
1
OCEAN CURRENTS
1
SEA ICE)
1
SEA WATER
1
STRAITS
1
TRANSLATIONS
1
USSR
1
WEATHER FORECASTING
1
WIND
1
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