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ARCTIC REGIONS
Ice and Permafrost
2
Snow
2
(*ICE
1
*ENVIRONMENTAL PROTECTION
1
*SEA ICE
1
AERIAL PHOTOGRAPHS
1
AERIAL RECONNAISSANCE
1
AIRBORNE
1
ARCTIC OCEAN
1
ARCTIC OCEAN)
1
ARCTIC SEA ICE
1
BIRDS EYE PROJECT
1
C-121 AIRCRAFT
1
CLIMATE
1
CONGRESS
1
DISTRIBUTION
1
ENVIRONMENTAL IMPACT
1
Government and Political Science
1
INSTRUMENTATION
1
MAPPING
1
NATIONAL SECURITY
1
NAVIGATION CHARTS
1
NC-121K AIRCRAFT
1
OBSERVATION AIRCRAFT
1
RADAR
1
SEA ICE
1
SURFACE TEMPERATURE
1
TABLES(DATA)
1
THERMOMETERS
1
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