Public aids to transportation
Subtitle: v. 1-4
Publisher: Govt.
Published: 1940
Place of publication: Washington, D.C
Language: eng
Subjects: Transportation -- United States; Subsidies
Table of contents: value: 1. General comparative analysis, and public aids to scheduled air transportation; value: 2. Aids to railroads and related subjects; value: 3. Public aids to transportation by water; value: 4. Public aids to motor vehicle transportation