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*LAND ICE
Ice and Permafrost
2
Snow
2
*CHEMICAL ANALYSIS
1
*DRILLING
1
*GREENLAND
1
*Thermal drilling
1
ALUMINUM
1
AUTUMN
1
BOREHOLES
1
CALCIUM
1
CONCENTRATION(CHEMISTRY)
1
CORE SAMPLING
1
Casings
1
DEEP DEPTH
1
DEPOSITS
1
DRILLS
1
GEOLOGIC AGE DETERMINATION
1
GREENLAND
1
ICE CAPS
1
LAYERS
1
LININGS
1
MAGNESIUM
1
Machinery and Tools
1
PIPES
1
POTASSIUM
1
Physical Chemistry
1
SEASONAL VARIATIONS
1
SODIUM
1
SPRING SEASON
1
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