TY  - BOOK
AU  - Kihlberg, Jaakko K.
AU  - Tharp, K.J., coaut.
ED  - E.U.A. National Research Council. Highway Research Board.
TI  - Accident rates as related to design elements of rural highw-ays / Jaakko K. Kihlberg and K.J. Tharp
CY  - Washington, D.C. : HRB
ER  -