TY  - BOOK
ED  - United States.
TI  - Highway transportation research and development studies 1973: HTRDS 1973 in progrss during fiscal year 1973
U1  - 388.31 
PY  - 1974///
CY  - Washington, D. C.
PB  - U.S. Dept. of Transportation
KW  - Transportation engineering
KW  - Traffic engineering
ER  -