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*TUNDRA
2
ALASKA
VEGETATION
*Active layer(Frost)
1
*COLD WEATHER OPERATIONS
1
*FROST
1
*Fish Creek
1
*PERMAFROST
1
ARCTIC REGIONS
1
AST24
1
Arctic thaw
1
DEPTH
1
DRILLING
1
ENVIRONMENTAL PROTECTION
1
EROSION
1
Ice and Permafrost
1
MELTING
1
METEOROLOGICAL DATA
1
Military Operations
1
PE61102A
1
PERMAFROST
1
POLLUTION
1
Pingok Island(Alaska)
1
SHAPE
1
Snow
1
Strategy and Tactics
1
TERRAIN
1
THAWING
1
THICKNESS
1
WU002
1
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