Drivers' understanding of road traffic signs / by P.G. Gray and R. Russell.
By: Gray, P. G.
Material type:
BookPublisher: [London : Central Office of Information], 1962Subject(s): Traffic surveys -- Great Britain. -- Traffic surveys -- Great Britain | Traffic signs and signals
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An inquiry covering England and Wales carried out for the Road Research Laboratory in October, 1962.
University Of Zambia Online Public Access Catalogue

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