Perceptual factors and meanings of symbolic information elements /
Federal Highway Administration, Offices of Research & Development.
|Related Names:||Welch, Daniel. , Lareau, Ernest W. , Roberts, King M.|
Washington : The Offices, 1977.
Distributed by NTIS.
Prepared by King M. Roberts, Ernest W. Lareau, Jr. and Daniel Welch.
2 v. :
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|Full viewv.1||Northwestern University|
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