Airports Communication Systems -- See Also the narrower term Air traffic control
Here are entered works on the regulation and control of aircraft traffic in the air. Works on the regulation of aircraft traffic on the ground are entered under Airports--Traffic control.
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Airports Employees -- See Also the narrower term Porters
Here are entered works on military bombardments by means of bombs dropped from the air. Works on sustained military attacks on cities, military positions, etc., with bombs, shells, rockets, or other explosive missiles are entered under Bombardment. Works on the use of explosive devices for the purposes of political terrorism, protest, etc., are entered under Bombings. --subdivision Aerial operations under individual wars, e.g. World War, 1939-1945--Aerial operations