AIR SAFETY (PUBLIC ADMINISTRATION)
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BTAIR TRAFFIC CONTROL (PUBLIC ADMINISTRATION)
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BTSAFETY (DANGER AND SAFETY)
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UDC351.814.2
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Descriptor GERFLUGSICHERHEIT (ÖFFENTLICHE VERWALTUNG)
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Descriptor ENGAIR SAFETY (PUBLIC ADMINISTRATION)
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Descriptor FRESÉCURITÉ DE VOL (ADMINISTRATION PUBLIQUE)
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Variant GERSICHERHEIT/FLUGSICHERHEIT (ÖFFENTLICHE VERWALTUNG)
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Variant ENGSAFETY/AIR SAFETY (PUBLIC ADMINISTRATION)
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Variant ENGFLIGHT SAFETY (PUBLIC ADMINISTRATION)
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Variant ENGAVIATION SAFETY (PUBLIC ADMINISTRATION)
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RTAIRCRAFT ACCIDENTS (TRANSPORTATION AND TRAFFIC)