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Ice and Permafrost
3
Snow
TRANSLATIONS
(*SOILS
2
ARCTIC REGIONS
2
PLANTS(BOTANY)
2
Soil Mechanics
2
TERRAIN
2
TUNDRA
2
USSR
2
(*PERMAFROST
1
*DESERTS
1
*FREEZING
1
*PLANTS(BOTANY)
1
*SOILS
1
*TUNDRA
1
ANIMALS
1
ARCTIC REGIONS)
1
BIOGEOGRAPHY
1
BIRDS
1
CLASSIFICATION
1
CLIMATE
1
ECONOMICS
1
Ecology
1
FOREST LAND
1
FORESTRY
1
FREEZING
1
GEOGRAPHIC DISTRIBUTION
1
HYDROLOGY
1
ICE
1
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