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WA-RD 708.3
Authors: 
Danna Moore, Yi Jen Wang.
Originator: 
Washington State University. Social & Economic Sciences Research Center (SESRC)
Publication Date: 
Thursday, May 15, 2008
WA-RD 690.1
Authors: 
Ken Casavant, Eric Jessup.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Wednesday, August 1, 2007
WA-RD 015.2
Authors: 
Milan Krukar, John C. Cook.
Originator: 
Washington State University. Highway Research Section.
Publication Date: 
Monday, July 1, 1968
WA-RD 497.1
Authors: 
Ken Casavant.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Wednesday, January 31, 2001
WA-RD 048.1
Authors: 
Washington (State). Department of Transportation. Traffic Safety Section.
Originator: 
Washington (State). Department of Transportation. Public Transportation and Planning Division.
Publication Date: 
Friday, May 21, 1982
WA-RD 026.1
Authors: 
Carl A. Toney.
Originator: 
Washington (State). Dept. of Highways. Planning, Research and State Aid. Research and Special Assignments.
Publication Date: 
Thursday, March 1, 1973