TY  - BOOK
AU  - Harrison, H. H.
AU  - Preist, T. P.
TI  - Automatic street traffic signalling (Apparatus and methods)
U1  - 625.79 HAR 
PY  - 1934///
CY  - London
PB  - Sir Isaac Pitman and Sons
KW  - Traffic engineering
KW  - Urban transportation
KW  - Automatic control systems
N1  - Includes index
ER  -