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FREEZING
ICE ISLANDS
3
Ice and Permafrost
3
MELTING
3
Snow
3
ALASKA
2
FLIGHT PATHS
2
GREENLAND SEA
2
Meteorology
2
OBSERVATION AIRCRAFT
2
SEA ICE
2
THICKNESS
2
(*AERIAL RECONNAISSANCE
1
(*SEA ICE
1
*ARCTIC OCEAN
1
*ARCTIC REGIONS
1
*ICE FORECASTING
1
*WEATHER FORECASTING
1
AERIAL PHOTOGRAPHY
1
AERIAL RECONNAISSANCE
1
AN/AMQ-17
1
ARCTIC OCEAN)
1
BAFFIN BAY
1
BAFFIN ISLAND
1
BAYS
1
BIRDS EYE 4 1969 PROJECT
1
BIRDS EYE 8 1969 PROJECT
1
CEILING
1
CRACKS
1
DATA ACQUISITION
1
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