Description
Item Description:Sponsored by Pennsylvania Dept. of Transportation and the U. S. Federal Highway Administration; the latter's R&D report number S-0591.
At head of title: Pennsylvania Dept. of Transportation, Bureau of Materials, Testing and Research. Research project number 72-6.
At head of title: Commonwealth of Pennsylvania, Dept. of Transportation, Bureau of Materials, Testing and Research.
Physical Description:vii, 91 pages : diagrams, graphs, tables ; 28 cm.
Bibliography:References: pages 90-91.