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ARCTIC REGIONS
ANTARCTIC REGIONS
5
ALASKA
4
Ice and Permafrost
4
Snow
4
(*SNOW
3
Information Science
3
MARINE TRANSPORTATION
3
MECHANICAL PROPERTIES
3
ROADS
3
USSR
3
(*ICE
2
(*PERMAFROST
2
*ABSTRACTS)
2
*BIBLIOGRAPHIES)
2
*POLAR REGIONS)
2
CONSTRUCTION
2
FREEZING
2
FRICTION
2
FROST HEAVE
2
GEOLOGY
2
GLACIERS
2
Geochemistry and Mineralogy
2
Geology
2
INTERACTIONS
2
MAPS
2
SCIENTIFIC RESEARCH)
2
SEA ICE
2
SOILS
2
(*COST EFFECTIVENESS
1
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