Navigation principles
Subtitle: prepared for aircraft flight crews.  Copyright ...
By: by Airlines war training institute ...
Contributors: Blackburn, Elbert F.
Published: 1942
Place of publication: Washington, D.C
Language: eng
Number of pages: 219
Subjects: Navigation (Aeronautics) -- Problems, exercises, etc.
Notes: Reproduced from type-written copy.
"Preparation:  Elbert F.Blackburn; illustration:  William Damon."