Aircraft at work.
By: [Prepared by A. D'Arcy Harvey, program officer and Dorothy E. Wilkins, research assistant.
Contributors: Harvey, Arthur D'Arcy.; Wilkins, Dorothy E.
Publisher: [s.l.]
Published: 1952
Place of publication: [Washington]
Language: eng
Number of pages: 63
Subjects: Aeronautics, Commercial -- United States -- Statistics.
Genres: Statistics.
Notes: Bibliography: p. 53-62.
Cover title.