Unknown Author
American Travel Publications
William C. Herow
Marc Oxenham
Robert O. Sylvester
Wiyadā Thō̜ngmit.
National Research Council (U.S.). Highway Research Board. Committee on Shoulders and Medians
Montana. Department of Transportation
G. F. King
India (Republic). Study Group on Wayside Amenities.
Kevin Edward Kiernan
Mairead Kenny
Earl F. Ferris
Ryann Ford
Griffin, D.M., Jr
Adachi-ku Kyōiku Iinkai
National Research Council (U.S.). Transportation Research Board