Standard and Tentative Methods of Sampling and Testing Highway Materials

Recommended by the Second Conference of State Highway Testing Engineers and Chemists, Washington, D.C., Feb. 23-27, 1920

by Alexander Wetmore, Arnold Orlando Dahlberg, Brayton Howard Ransom, Carl Hartley, Charles Dwight Marsh, Charles Franklin Creswell, Clarence William Kitchen, Clinton Gold Smith, Edouard Horace Siegler, Edward Browning Meigs, Frederick Storrs Baker, George Arthur Bell, George Durward Smith, Harrison Morton Dixon, Harry Taylor Edwards, Howard Ross Tolley, James Houston Shrader, Joseph Martin Mehl, Martin Reese Cooper, Norman Eugene McIndoo, Ralph Hoagland, Samuel Henry Ayers, William Ransom Meadows, A. B. Clawson, Edward M. Seifert, Frank Rabak, George Leslie Bidwell, H. S. Garner, J. M. Purdom, John Oscar Williams, Lillian M. Church, Paul Wescoe Clemmer, Raymond Secord Washburn, Thompson Elwyn Woodward, William Gardiner Blair, Mary B. Hall