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*CONSTRUCTION
Civil Engineering
5
ARCTIC REGIONS
4
PERMAFROST
4
*COLD WEATHER CONSTRUCTION
3
ALASKA
3
FOUNDATIONS(STRUCTURES)
3
MILITARY FACILITIES
3
SUBARCTIC REGIONS
3
*LANDING FIELDS
2
*PERMAFROST
2
BUILDINGS
2
CONCRETE
2
CONSTRUCTION MATERIALS
2
FREEZING
2
MOISTURE
2
RUNWAYS
2
SOILS
2
Structural Engineering and Building Technology
2
Terminal Flight Facilities
2
*ARCTIC REGIONS
1
*CLIMATE
1
*EMBANKMENTS
1
*MILITARY FACILITIES
1
*SUBARCTIC REGIONS
1
*Thermoinsulation
1
AERIAL RECONNAISSANCE
1
AS52E
1
AS894
1
AST42
1
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