TY  - JOUR
PY  - 1971//
TI  - Causal chain approaches to the evaluation of highway safety countermeasures
JO  - Journal of safety research
A1  - Hall, William K.
A1  - O'Day, Joanne
SP  - 9
EP  - 20
VL  - 3
IS  - 1
N2  - <p>[Abstract unavailable]</p>
LA  - en
SN  - 0022-4375
UR  - http://dx.doi.org/
ID  - ref1
ER  -