Description
Item Description:At head of title: National Cooperative Highway Research Program.
"Research sponsored by the American Association of State Highway and Transportation Officials in cooperation with the Federal Highway Administration."
Electronic resource.
Physical Description:1 online resource (142 pages) : illustrations.
Bibliography:Includes bibliographical references (pages 138-140).
ISBN:9781621982449
1621982440
ISSN:0077-5614 ;