Aviation safety :
conditions within the air traffic control work force.
|Corporate Author:||United States.|
Washington, D.C. : U.S. General Accounting Office, 
United States. /
Federal Aviation Administration.
Air traffic control > Air traffic control / United States > Air traffic control / United States / Evaluation.
Air traffic controllers > Air traffic controllers / United States.
"Fact sheet for Congressional requesters."
129 p. ;
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|Item Link||Original Source|
||University of Illinois at Urbana-Champaign|