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WA-RD 493.1
Authors: 
John M. Ishimaru, Jennifer Nee, Mark E. Hallenbeck.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Friday, September 1, 2000
WA-RD 493.2
Authors: 
Mark E. Hallenbeck, John M. Ishimaru, Jennifer Nee.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Friday, September 1, 2000
WA-RD 495.1
Authors: 
Jon W. Cammermayer, Richard R. Horner, Naomi Chechowitz.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Thursday, November 30, 2000

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