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Ice and Permafrost
3
OBSERVATION AIRCRAFT
3
Snow
3
(*AERIAL RECONNAISSANCE
2
(*SEA ICE
2
ARCTIC OCEAN)
2
FREEZING
2
GREENLAND SEA
2
ICE ISLANDS
2
MELTING
2
SEA ICE)
2
(*ICE
1
*ARCTIC OCEAN)
1
*POLYNYAS
1
AERIAL PHOTOGRAPHS
1
AERIAL PHOTOGRAPHY
1
AERIAL RECONNAISSANCE
1
AIRBORNE
1
ALASKA
1
ARCTIC REGIONS
1
BAFFIN BAY
1
BIRDS EYE 3 PROJECT(1969)
1
BIRDS EYE 4 1969 PROJECT
1
BIRDS EYE PROJECT
1
C-121 AIRCRAFT
1
CEILING
1
DATA ACQUISITION
1
DATA PROCESSING
1
DISTRIBUTION
1
FLIGHT PATHS
1
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