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  1. Standard forms for specifications, tests, reports, and methods of sampling for road materials : as recommended by the First Conference of State Highway Testing Engineers and Chemists, Washington, D.C., Feb. 12-17, 1917
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1917
  2. Bulletin of the U.S. Department of Agriculture
    Publication info: [Washington, D.C.?], Supt. of Docs., G.P.O, 1913-1923