Air workers
By: [by] Picture fact associates; Alice V. Keliher, editor, Franz Hess, Marion LeBron [and] Rudolf Modley; Otto Bettman, picture consultant.
Contributors: Hess, Franz.; LeBron, Marion.; Modley, Rudolf.
Series: Picture fact books
Publisher: Harper and brothers
Published: 1939
Place of publication: New York; London
Language: eng
Number of pages: 56
Subjects: Aeronautics.