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LIFE SUPPORT SYSTEMS
*ARCTIC REGIONS
3
ICE
3
*LOGISTICS
2
GROUND EFFECT MACHINES
2
Logistics
2
Military Facilities and Supplies
2
REMOTE CONTROL
2
SYMPOSIA
2
TRANSPORTATION
2
*CHALCOGENS
1
*ELASTOMERS
1
*LOGISTICS MANAGEMENT
1
*PERMAFROST
1
*RESOURCE MANAGEMENT
1
*SCIENTIFIC RESEARCH
1
*SHOCK WAVES
1
71 CLASSICAL AND QUANTUM MECHANICS
1
ACOUSTICS
1
AEROSPACE MEDICINE
1
ATMOSPHERES
1
Administration and Management
1
BONDING
1
CARBON COMPOUNDS
1
CARBON DIOXIDE
1
CARBON OXIDES
1
CHALCOGENIDES
1
COMPUTERS
1
CONSTRUCTION
1
Ceramics
1
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