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(*AVALANCHES
2
Ice and Permafrost
2
MOUNTAINS
Snow
TRANSLATIONS
2
USSR
2
(*GLACIERS
1
(*SNOW
1
*RAILROADS)
1
*SYMPOSIA)
1
ALPS MOUNTAINS
1
CONTROL)
1
INDUSTRIES
1
MOTION
1
PROTECTION)
1
ROADS
1
SCIENTIFIC RESEARCH
1
STABILITY
1
SWITZERLAND
1
Surface Transportation and Equipment
1
TERRAIN
1
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