AUTHOR
- National Research Council (U.S.). Transportation Research Board 10 results
- National Research Council (U.S.). Transportation Research Board. Meeting 4 results
- American Association of State Highway Officials 1 results
- American Association of State Highway and Transportation Officials 1 results
- Butler, B. C. 1 results
- Crowther, Lloyd R. 1 results
- Goble, George G. 1 results
- National Research Council (U.S.). Highway Research Board. Summer meeting 1 results
- National Research Council (U.S.). Transportation Research Board. Annual meeting 1 results
- Organisation for Economic Co-operation and Development 1 results
- Washington (State). Dept. of Highways 1 results