TY  - BOOK
ED  - American Association of State Highway and Transportation Officials.
TI  - A policy on design standards
AV  - TE23 .A66 1989
U1  - 625.7 20
PY  - 1971///
CY  - Washington, D.C. (444 N. Capitol St., N.W., Suite 225)
PB  - AASHTO
KW  - Interstate Highway System
KW  - Design and construction
KW  - Standards
KW  - Roads
KW  - United States
N1  - "December 1988."
ER  -