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."
Physical Description:67 pages : illustrations, charts ; 28 cm.
Also available online.
Bibliography:Includes bibliographical references (pages 42-47).
ISBN:9780309154789
0309154782
ISSN:0077-5614 ;