Description
Item Description:"ISBN 978-0-309-09795-5."
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:130 pages : illustrations, maps, forms ; 28 cm.
Bibliography:Includes bibliographical references (pages 73-77).
ISSN:0547-5570 ;