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(*SLEDS
(*CUTTING TOOLS
1
(*ICEBREAKERS
1
(*POLAR REGIONS
1
ARC WELDING
1
BREAKERS
1
BREAKERS)
1
CARGO
1
COLD WEATHER TESTS
1
CONSTRUCTION)
1
EFFECTIVENESS
1
FEASIBILITY STUDIES
1
HEATERS
1
ICEBREAKERS)
1
INTERNAL COMBUSTION ENGINES
1
Ice and Permafrost
1
MOTOR GENERATORS
1
Marine Engineering
1
POLAR REGIONS)
1
REVIEWS
1
RIVERS)
1
RUNWAYS
1
Snow
1
TRACTORS
1
TRANSLATIONS
1
USSR
1
VELOCITY
1
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