End-of-course test in Elements of aeronautics. Course no. EM910. By members of the examinations staff, Ralph W. Tyler, director.
UNITED STATES ARMED FORCES INSTITUTE, MADISON, WIS. End-of-course test in Elements of aeronautics. Course no. EM910. By members of the examinations staff, Ralph W. Tyler, director. © 20Jun44; AA466311. Educational Testing Service (PWH); 9Nov71; R516211.
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