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USSR
*DESERTS
1
*PLANTS(BOTANY)
1
ARCTIC REGIONS
1
BIOGEOGRAPHY
1
BIRDS
1
Ecology
1
GEOGRAPHIC DISTRIBUTION
1
Ice and Permafrost
1
LICHENS
1
MAMMALS
1
PENINSULAS
1
PERMAFROST
1
SIBERIA
1
SOILS
1
Snow
1
Soil Mechanics
1
TEMPERATURE
1
TERRAIN
1
THAWING
1
TRANSLATIONS
1
TUNDRA
1
Taimyr Peninsula
1
Tundra
1
VEGETATION
1
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