Standard specifications for transportation materials and methods of sampling and testing. - Washington : American Association of State Highway and Transportation Officials, - v. : ill. ; 24 cm. 1 CD-ROM ISBN: 9781560513582 ISSN: 0360-6902 Subjects--Topical Terms: Road materials--Standards--United States. Dewey Class. No.: 625.8021873 AAS 625.8021873 / AAS