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Ice and Permafrost
4
MEASUREMENT
Snow
*ARCTIC OCEAN
2
*SEA ICE
2
Geography
2
THICKNESS
2
*AERIAL RECONNAISSANCE
1
*AIRBORNE TOPOGRAPHIC MAPPER
1
*ARCTIC REGIONS
1
*CLIMATE
1
*DEPTH
1
*Global climate change
1
*HEIGHT FINDING
1
*HELICOPTERS
1
*ICE
1
*LASER ALTIMETRY
1
*LASER APPLICATIONS
1
*OVERFLIGHT
1
*PACK ICE
1
*POLAR REGIONS
1
*RADAR IMAGES
1
*REGRESSION ANALYSIS
1
*Remote Sensing
1
*SEA ICE THICKNESS
1
*SUBMARINES
1
*THICKNESS
1
AERIAL FLIGHTS
1
AGRICULTURE
1
AIRBORNE
1
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