1972 census of transportation.
Publisher: For sale by the Supt. of Docs., U.S. Govt. Print. Off.
Published: 1974
Place of publication: Washington
Language: eng
Subjects: Transportation -- United States -- Statistics.
Table of contents: title: v. 1. National travel survey.; title: v. 2. Truck inventory and use survey.; title: v. 3. Commodity transportation survey: pt. 1. Commodity and special statistics. pt. 2. Area statistics, Northeast and North Central regions. pt. 3. Area statistics, South and West regions and U.S. Summary.