Public aids to transportation ...
Subtitle: Published after expiration of Emergency Railroad Transportation Act, 1933 ...
Publisher: U.S. Govt. Print. Off.
Published: 1938
Place of publication: Washington
Language: eng
Subjects: Transportation -- United States; Aeronautics, Commercial -- United States
Table of contents: value: v. 1. General comparative analysis, and public aids to scheduled air transportation.  1940.-  v. 2. Aids to railroads and related subjects. 1938.-  v. 3. Public aids to transportation by water.  1939.-  v. 4. Public aids to motor vehicle transportation.  1940.