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(*PERMAFROST
2
(*SOILS
2
*SOIL EROSION
2
EROSION)
FREEZING
Ice and Permafrost
2
Snow
2
Soil Mechanics
2
TERRAIN)
2
TRANSLATIONS
2
TUNDRA
2
USSR
2
*FREEZING
1
*SOILS
1
ATMOSPHERIC PRECIPITATION
1
CLIMATE
1
COOLING
1
EXPOSURE(PHYSIOLOGY)
1
MELTING
1
NETWORKS
1
PERMAFROST
1
RIVERS
1
SOILS
1
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