Item:Q13699: Difference between revisions
Created a new Item: air traffic control, service provided for the purpose of preventing collisions between aircraft, and on the manoeuvring area between aircraft and obstructions; and expediting and maintaining an orderly flow of air traffic |
Created claim: subclass of (P1): safety of air navigation (Q13700) |
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Property / subclass of | |||
Property / subclass of: safety of air navigation / rank | |||
Normal rank |