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Ice and Permafrost
Snow
5
ANTARCTIC REGIONS
3
*ANTARCTIC REGIONS
2
Active & Passive Radar Detection & Equipment
2
PROFILES
2
*ICE
1
*ICE ISLANDS
1
*ICEBERGS
1
*LAND ICE
1
*OCEAN CURRENTS
1
*RADAR RECONNAISSANCE
1
*RADAR REFLECTIONS
1
*RUNWAYS
1
*SEA ICE
1
*SITE SELECTION
1
*SOUNDING
1
AERIAL PHOTOGRAPHS
1
ARCTIC REGIONS
1
ATMOSPHERIC TEMPERATURE
1
BAROMETRIC PRESSURE
1
Bedrock
1
COMPARISON
1
COMPRESSION
1
CORE SAMPLING
1
DETECTION
1
DETERIORATION
1
ECHO RANGING
1
ELECTRICAL CONDUCTIVITY
1
ENGINEERING
1
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