Books by King M. Roberts:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Roberts, King M.: Perceptual factors and meanings of symbolic information elements (The Offices, 1977), also by Daniel Welch, Ernest W. Lareau, and United States. Federal Highway Administration. Offices of Research and Development (page images at HathiTrust)- Roberts, King M.: Perceptual factors and meanings of symbolic information elements (Dept. of Transportation, Federal Highway Administration, Offices of Research and Development ;, 1977), also by Daniel Welch, Ernest W. Lareau, and United States Federal Highway Administration (page images at HathiTrust)
- Roberts, King M.: Perceptual factors and meanings of symbolic information elements. Volume I, executive summary. (1977), also by Ernest W. Lareau and Daniel Welch (page images at HathiTrust)
- Roberts, King M.: Perceptual factors and meanings of symbolic information elements. Volume II, technical report. (1977), also by Ernest W. Lareau and Daniel Welch (page images at HathiTrust)
- Roberts, King M.: Study of the national standards for directional and other official signs. Laboratory evaluation. Final report. (1975), also by A. G. Klipple (page images at HathiTrust)
Find more by King M. Roberts at your library, or elsewhere.