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  1. 1
    Published 1969
    Book

    Traffic control for freeway maintenance.
  2. 2
    by Rockwell, Thomas Hugh 1929-
    Published 1968
    Book

    Sensing and communication between vehicles
  3. 3
    by Leisch, Jack E.
    Published 1967
    Book

    Effect of control devices on traffic operations
  4. 4
    by Hamlin, Ina M. b. 1896
    Published 1954
    Book

    Highway finance selected references, 1950-1953.
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