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Ice and Permafrost
Snow
4
ANTARCTIC REGIONS
3
Civil Engineering
3
(*SNOW
2
CLIMATE
2
DETERIORATION
2
MAINTENANCE
2
MCMURDO STATION(ANTARCTICA)
2
(*ROADS
1
(*SEA ICE
1
*ANTARCTIC REGIONS)
1
*BIOLOGICAL CONTAMINATION
1
*ENVIRONMENTAL IMPACT
1
*LAND ICE
1
*RADAR EQUIPMENT
1
*ROADS
1
*RUNWAYS
1
*SEWAGE DISPOSAL
1
*SNOW
1
*SOLID WASTES
1
AGE HARDENING
1
ANTENNAS
1
Active & Passive Radar Detection & Equipment
1
BLOWERS
1
BRINES
1
BURIED OBJECTS
1
CLEGG IMPACT HAMMERS
1
CLIMATE CHANGE
1
COLD WEATHER CONSTRUCTION
1
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