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Air
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keywords:(Air)
VOR aircraft guidance in rockies completes coast-to-coast system
Voice-switched frequency hookup equipment for air traffic control
Visual aids to traffic movement under blackouts
U.S. air transportation economics
Type and amount of exhaust gases emitted from industrial, domestic and automobile units
Transponder altitude encoders for air traffic control
Suggestions for railroad blackout
Standby power for air-conditioned cars
Some international aspects of air transport
Signal blackout studies in Australia
Progress and challenge of air safety