Description
Item Description:"October 1991."
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:90 p. : ill., forms, maps ; 28 cm.
Bibliography:Includes bibliographical references (p. 36-41).
ISBN:0309049245
ISSN:0547-5570 ;