Traffic signals /

Wedi'i Gadw mewn:
Manylion Llyfryddiaeth
Prif Awdur: Petrossian, Sarkis V.
Awduron Corfforaethol: Western Australia. Main Roads Dept, Local Government Engineers' Association of W.A
Fformat: Llyfr
Iaith:English
Cyhoeddwyd: Perth : Main Roads Dept., W.A., 1980.
Pynciau:
Disgrifiad
Disgrifiad o'r Eitem:Road traffic control systems (ANB/PRECIS SIN 0446971)
At head of title: Local Government Engineers' Association training course for engineers, Tuesday April 23, 1980.
Disgrifiad Corfforoll:[22] leaves : ill., plans ; 30 cm.
ISBN:0724482792 :