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Ice and Permafrost
MOISTURE
Snow
3
LAKES
2
TEMPERATURE
2
(*IONS
1
(*PERMAFROST
1
*ECOLOGY
1
*PERMAFROST
1
*RADAR CROSS SECTIONS
1
*SEA ICE
1
*SOILS
1
ALASKA
1
ALASKA)
1
ARCTIC REGIONS
1
Active & Passive Radar Detection & Equipment
1
BACKSCATTERING
1
BARROW(ALASKA)
1
CLAY MINERALS
1
CLIMATE
1
CONCENTRATION(CHEMISTRY))
1
DATA ACQUISITION
1
DENSITY
1
DEPOSITS
1
Ecology
1
FREEZING
1
FREQUENCY RESPONSE
1
GEOLOGICAL SURVEY
1
GRAVEL
1
Inorganic Chemistry
1
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