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*PERMAFROST
USSR
*CONSTRUCTION
1
*ENVIRONMENTAL PROTECTION
1
AIR POLLUTION
1
ARCTIC REGIONS
1
BUILDINGS
1
CIVIL ENGINEERING
1
COLD REGIONS
1
CONCRETE
1
Civil Engineering
1
Construction Equipment
1
DAMAGE
1
DEPLETION
1
ECOSYSTEMS
1
EROSION
1
EXCAVATION
1
FOUNDATIONS(STRUCTURES)
1
Human Factors Engineering & Man Machine System
1
Ice and Permafrost
1
Materials & Supplies
1
NATURAL RESOURCES
1
PREVENTION
1
STABILIZATION
1
SYMPOSIA
1
Snow
1
Soil Mechanics
1
Structural Engineering and Building Technology
1
TRANSLATIONS
1
VEGETATION
1
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