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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 15.1
Authors: 
G.A. Riedesel, John C. Cook, Milan Krukar.
Originator: 
Washington State University. College of Engineering. Research Division. Highway Research Section.
Publication Date: 
Saturday, July 1, 1967
WA-RD 144.1
Authors: 
Robert D. Strombom.
Originator: 
Fujiki and Associates, Inc.
Publication Date: 
Monday, June 1, 1987