AIR TRAFFIC + AVIATION (TRANSPORTATION AND TRAFFIC)
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BTTRANSPORTATION MODES (TRANSPORTATION AND TRAFFIC)
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UDC656.7
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Descriptor GERLUFTVERKEHR (VERKEHR UND TRANSPORT)
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Descriptor ENGAIR TRAFFIC + AVIATION (TRANSPORTATION AND TRAFFIC)
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Descriptor FRETRAFIC AÉRIEN + AVIATION (TRANSPORTS ET TRAFIC)
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Variant GERVERKEHR/LUFTVERKEHR (VERKEHR UND TRANSPORT)
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Variant GERLUFTFAHRT (VERKEHR UND TRANSPORT)
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Variant GERFLIEGEREI (VERKEHR UND TRANSPORT)
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Variant ENGAVIATION (TRANSPORTATION AND TRAFFIC)
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Variant ENGTRAFFIC/AIR TRAFFIC (TRANSPORTATION AND TRAFFIC)
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Variant ENGAIR TRANSPORT (TRANSPORTATION AND TRAFFIC)
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Variant ENGTRANSPORT/AIR TRANSPORT (TRANSPORTATION AND TRAFFIC)
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Variant FREAVIATION (TRANSPORTS ET TRAFIC)
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Variant FREAÉRIEN/TRAFIC AÉRIEN, TRANSPORT AÉRIEN (TRANSPORTS ET TRAFIC)
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Variant FRETRANSPORT AÉRIEN (TRANSPORTS ET TRAFIC)
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Variant FRETRANSPORT PAR AVION (TRANSPORTS ET TRAFIC))
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Variant FREAVION/TRANSPORT PAR AVION (TRANSPORTS ET TRAFIC)
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NTAIRPORTS + AERODROMES (TRANSPORTATION AND TRAFFIC)
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NTAIRCRAFT ACCIDENTS (TRANSPORTATION AND TRAFFIC)
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NTHISTORY OF AVIATION
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NTCOMMERCIAL AIR TRAFFIC (TRANSPORTATION AND TRAFFIC)
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NTAIR FREIGHT (TRANSPORTATION AND TRAFFIC)
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RTAIR NAVIGATION SERVICES (PUBLIC ADMINISTRATION)
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RTTRAFFIC ROUTES PLANNING (PHYSICAL PLANNING)