1980 truck weight study :
advance planning.
APA Citation
Iowa. Department of Transportation. (1981). 1980 truck weight study: advance planning. Ames: Iowa Department of Transportation.
MLA Citation
Iowa. Department of Transportation. 1980 Truck Weight Study: Advance Planning. Ames: Iowa Department of Transportation, 1981.
Warning: These citations may not always be complete (especially for serials).