TY  - JOUR
PY  - 1956//
TI  - Philadelphia's New Program for Traffic Signal Modernization
JO  - Traffic quarterly
A1  - Butterfield, SF
SP  - 268
EP  - 268
VL  - 10
IS  - 2
N2  - [Abstract unavailable]    <p>Language: en</p>
LA  - en
SN  - 0041-0713
UR  - http://dx.doi.org/
ID  - ref1
ER  -