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SOILS
ALASKA
4
*TUNDRA
3
ARCTIC REGIONS
3
Ice and Permafrost
3
Snow
3
*ARCTIC REGIONS
2
*CARBON DIOXIDE
2
*ECOLOGY
2
ATMOSPHERIC TEMPERATURE
2
PERMAFROST
2
TABLES(DATA)
2
TERRAIN
2
TUNDRA
2
*ATMOSPHERIC TEMPERATURE
1
*BEAUFORT SEA
1
*COASTAL REGIONS
1
*Ecosystems
1
*GROUND EFFECT MACHINES
1
*MILITARY TRANSPORTATION
1
*OIL POLLUTION
1
*PERMAFROST
1
*Primary biological productivity
1
*Subarctic regions
1
AERIAL PHOTOGRAPHS
1
ALCOHOLS
1
ATMOSPHERES
1
Anatomy and Physiology
1
Atmospheric Physics
1
Barrow(Alaska)
1
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