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SURFACE PROPERTIES
Ice and Permafrost
2
Snow
2
(*GLACIERS
1
*GEOLOGICAL SURVEYS
1
*GLACIERS
1
*INFRARED SCANNING
1
*SEA ICE
1
AERIAL PHOTOGRAPHS
1
AERIAL RECONNAISSANCE
1
ARCTIC REGIONS
1
ARLIS 2 ICE ISLAND
1
CANADA)
1
DEPTH FINDING
1
DISTRIBUTION
1
ECHO RANGING
1
EROSION
1
ICE
1
ICE ISLANDS
1
INFRARED IMAGES
1
INSTRUMENTATION
1
Infrared Detection and Detectors
1
MELTING
1
MOTION
1
PERIODIC VARIATIONS
1
PHOTOGRAPHY
1
POLAR REGIONS
1
PREDICTIONS
1
RADIO EQUIPMENT
1
ROUGHNESS
1
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