Traffic signals /

Bibliographic Details
Main Author:	Webster, F. V.
Corporate Author:	Road Research Laboratory
Other Authors:	Cobbe, B. M.
Format:	Book
Language:	English
Published:	London : H.M.S.O., 1966.
Series:	Road research technical paper ; no. 56.
Subjects:	Electronic traffic controls. Traffic signs and signals > Great Britain.

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