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(*PERMAFROST
1
(*SOILS
1
*FREEZING
1
*SOILS
1
*TUNDRA
ARCTIC REGIONS)
1
FOREST LAND
FORESTRY
1
FREEZING
ICE
1
INTERACTIONS
1
Ice and Permafrost
1
MELTING
1
METEOROLOGICAL PHENOMENA
1
MOISTURE
1
PLANTS(BOTANY)
1
RIVERS
1
SOILS)
1
SWAMPS
1
Snow
1
Soil Mechanics
TEMPERATURE
1
TRANSLATIONS
1
USSR
1
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