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(*PERMAFROST
*FREEZING
2
*SOILS
FREEZING
ICE
2
Ice and Permafrost
2
MELTING
2
MOISTURE
Snow
2
TEMPERATURE
2
(*FOUNDATIONS(STRUCTURES)
1
(*SOILS
1
*TUNDRA
1
ARCTIC REGIONS)
1
DESIGN)
1
DRILLING
1
FOREST LAND
1
FORESTRY
1
FROST HEAVE
1
INTERACTIONS
1
METEOROLOGICAL PHENOMENA
1
PENETRATION
1
PLANTS(BOTANY)
1
POWER EQUIPMENT
1
RECOVERY
1
RIVERS
1
SAMPLING)
1
SOILS
1
SOILS)
1
SWAMPS
1
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