American Association of State Highway and Transportation Officials
W. J. Dibdin
Bob M. Gallaway
Asphalt Institute.
Unknown Author
Gordon Beecroft
Nihon Hodō Kabushiki Kaisha
C. C Lutes
Thomas A. Sullivan
National Research Council (U.S.). Transportation Research Board
Irving Kett
H. Plancher
National Research Council (U.S.) Transportation Research Board
A. E. Gross
Guillermo Thenoux