density profile

WA-RD 476.1
Authors: 
Kim A. Willoughby, Joe P. Mahoney, Linda M. Pierce, Jeff S. Uhlmeyer, Keith W. Anderson, Steven A. Read, Stephen T. Muench, Travis R. Thompson, Robyn Moore.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Sunday, July 1, 2001