A second investigation into bilingual (Welsh/English) traffic signs /

Bibliographic Details

Main Author:	Rutley, K. S.
Corporate Author:	Transport and Road Research Laboratory. Safety Department. Driver Aids and Abilities Division
Format:	Book
Language:	English
Published:	Crowthorne, Berkshire, Eng. : Transport and Road Research Laboratory, 1974.
Series:	TRRL supplementary report ; no. 34UC.
Subjects:	Traffic signs and signals.