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WA-RD 861.2
Authors: 
Peter H. Dahl, David R. Dall'Osto, Jim Laughlin.
Originator: 
Washington State Transportation Center (TRAC).
Publication Date: 
Monday, April 24, 2017
WA-RD 861.1
Authors: 
Per G. Reinhall, Tim Dardis, Julie Hampden.
Originator: 
Washington State Transportation Center (TRAC-UW)
Publication Date: 
Tuesday, November 22, 2016
WA-RD 015.3
Authors: 
Milan Krukar, John C. Cook.
Originator: 
Washington State University. Highway Research Section.
Publication Date: 
Tuesday, July 1, 1969
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 313.2
Authors: 
William Eikey, Donald J. Janssen, Kenneth C. Hover.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Tuesday, May 31, 1994
WA-RD 313.1
Authors: 
William Eikey, Donald J. Janssen, Kenneth C. Hover.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Tuesday, May 31, 1994