TY  - BOOK
AU  - Hauer,Ezra
TI  - OBSERVATIONAL BEFORE-AFTER STUDIES IN ROAD SAFTEY
SN  - 0080430538
U1  - 625.7042 
PY  - 1997///
CY  - 
PB  - Elsevier, Oxford
KW  - Roads -- Saftey Measures
KW  - Traffic Engg
ER  -