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Ice and Permafrost
6
Snow
6
GREENLAND
5
ICE CAPS
3
*LAND ICE
2
*SNOW
2
CONCENTRATION(CHEMISTRY)
2
CORE SAMPLING
2
GEOLOGIC AGE DETERMINATION
2
MEASUREMENT
2
*BOREHOLES
1
*CHEMICAL ANALYSIS
1
*DRILLING
1
*GREENLAND
1
*ICE
1
*ICE CAPS
1
*RADAR STATIONS
1
*STRUCTURAL ANALYSIS
1
*Thermal drilling
1
ACCUMULATION
1
AEROSOLS
1
AIR POLLUTION
1
ALUMINUM
1
APPROXIMATION(MATHEMATICS)
1
ATMOSPHERIC MOTION
1
AUTUMN
1
AZIMUTH
1
BACKFILLS
1
BASE LINES
1
BOREHOLES
1
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