TY  - JOUR
PY  - 1959//
TI  - National Traffic Safety Services
JO  - Traffic quarterly
A1  - Goodwin, CA
SP  - 567
EP  - 578
VL  - 13
IS  - 4
N2  - [Abstract unavailable]    <p>Language: en</p>
LA  - en
SN  - 0041-0713
UR  - http://dx.doi.org/
ID  - ref1
ER  -