Changeable message signs :
a driver preference survey /
A. Smiley, R. Dewar.
APA Citation
Smiley, A. M., Dewar, R. (Robert)., Ontario. Ministry of Transportation. Research and Development Branch. (1988). Changeable message signs: a driver preference survey. [Downsview, Ont.]: Research and Development Branch, Ontario Ministry of Transportation.
MLA Citation
Smiley, Alison M, R. (Robert) Dewar, and Ontario. Ministry of Transportation. Research and Development Branch. Changeable Message Signs: a Driver Preference Survey. [Downsview, Ont.]: Research and Development Branch, Ontario Ministry of Transportation, 1988.
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