1972 census of transportation.
Truck inventory and use survey.

APA Citation

United States. Bureau of the Census. 1972 census of transportation. Washington, D.C.: U.S. Dept. of Commerce, Social and Economic Statistics Administration, Bureau of the Census.

MLA Citation

United States. Bureau of the Census. 1972 Census of Transportation. Washington, D.C.: U.S. Dept. of Commerce, Social and Economic Statistics Administration, Bureau of the Census,

Warning: These citations may not always be complete (especially for serials).