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WA-RD 396.1
Authors: 
G. Scott Rutherford, Stephanie MacLachlan, Kathleen Semple.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Monday, September 18, 1995
WA-RD 088.1
Authors: 
Mark E. Hallenbeck, Chien Lin.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Tuesday, July 1, 1986
WA-RD 507.1
Authors: 
Barbara Nightingale, Charles A. Simenstad.
Originator: 
Washington State Transportation Center (TRAC); University of Washington. School of Aquatic and Fishery Sciences. Wetland Ecosystem Team.
Publication Date: 
Sunday, July 1, 2001
WA-RD 508.1
Authors: 
Barbara Nightingale, Charles Simenstad.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Tuesday, May 1, 2001
WA-RD 508.2
Authors: 
Barbara Nightingale, Charles Simenstad.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Friday, June 1, 2001