Showing 1 - 2 results of 2 for search 'Pfefer, Ronald C.', query time: 0.01s Refine Results
  1. 1

    Improved safety information to support highway design by Pfefer, Ronald C.

    Published 1999
    Book

    Improved safety information to support highway design
  2. 2

    Effect of control devices on traffic operations by Leisch, Jack E.

    Published 1967
    Book

    Effect of control devices on traffic operations

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