National Research Council (U.S.). Highway Research Board, National Research Council (U.S.). Highway Research Board. Meeting, & National Research Council (U.S.). Committee on Characteristics of Bituminous Materials. (1972). Asphalt mixture characterization and asphalt grading: 10 reports prepared for the 51st Annual Meeting. Highway Research Board.

National Research Council (U.S.). Highway Research Board, National Research Council (U.S.). Highway Research Board. Meeting, and National Research Council (U.S.). Committee on Characteristics of Bituminous Materials. Asphalt Mixture Characterization and Asphalt Grading: 10 Reports Prepared for the 51st Annual Meeting. Washington: Highway Research Board, 1972.

National Research Council (U.S.). Highway Research Board, et al. Asphalt Mixture Characterization and Asphalt Grading: 10 Reports Prepared for the 51st Annual Meeting. Highway Research Board, 1972.