A field test of a grade severity rating system

Uniform Title: Field test of a grade severity rating system (Online)
Main Author: Erickson, Raymond C., Jr.
Other Authors: Colorado. Department of Highways., United States. Federal Highway Administration.
Format: Electronic
Language: English
Published: Denver, Colo. : Colorado Department of Highways, [1985]
Physical Description: 1 online resource (v, 15 numbered pages; 11 unnumbered pages) : illustrations.
Subjects:
Online Access: Access online