The Development of a procedure for evaluating the proficiency of air route traffic controllers.

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Bibliographic Details
Online Access:	Full Text (via ProQuest)
Format:	Government Document eBook
Language:	English
Published:	[Washington] : [s.n.], 1949.
Subjects:	Airplanes. Air traffic control. Aircraft accidents. Aircraft industry.

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Full Text (via ProQuest)

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Call Number:	C31.131..83
C31.131..83	Available