Radio operating
Subtitle: prepared for aircraft flight and ground crews.  Copyright ...
By: by Airlines war training institute ...
Contributors: Stone, John William, 1910-
Published: 1942
Place of publication: Washington, D.C
Language: eng
Number of pages: 65
Subjects: Radio in aeronautics -- Problems, exercises, etc.
Notes: Reproduced from type-written copy.
"Preparation:  John W. Stone; illustration:  Joe Chris Smith."