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WA-RD 843.1
Authors: 
Evan Olszko, Donald A. Bender
Originator: 
Washington State University. Department of Civil and Environmental Engineering
Publication Date: 
Monday, June 29, 2015
WA-RD 146.1
Authors: 
Robert J. Hoyle, Jr., Paul S. Rutherford.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Wednesday, July 1, 1987