(1981). Luminous requirements for traffic signs: A comparison of sign performance and requirements / prepared for U.S. Department of Transportation, Federal Highway Administration, Offices of Research & Development, Traffic Systems Division.
Chicago Style (17th ed.) CitationLuminous Requirements for Traffic Signs: A Comparison of Sign Performance and Requirements / Prepared for U.S. Department of Transportation, Federal Highway Administration, Offices of Research & Development, Traffic Systems Division. 1981.
ציטוט MLALuminous Requirements for Traffic Signs: A Comparison of Sign Performance and Requirements / Prepared for U.S. Department of Transportation, Federal Highway Administration, Offices of Research & Development, Traffic Systems Division. 1981.