sampling

WA-RD 039.12
Authors: 
Tai Wik David Chui, Brian W. Mar, Richard R. Horner.
Originator: 
University of Washington. Environmental Engineering and Science Program.
Publication Date: 
Friday, January 1, 1982
WA-RD 315.2
Authors: 
Joe P. Mahoney, Marc Seferian.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Thursday, November 30, 1995
WA-RD 145.1
Authors: 
Jerry D. Higgins, Richard J. Fragaszy, Tony Martin.
Originator: 
Washington State Transportation Center (TRAC)
Publication Date: 
Monday, November 30, 1987
WA-RD 116.1
Authors: 
R.H. Gietz.
Originator: 
Washington (State). Dept. of Transportation. Materials Office.
Publication Date: 
Wednesday, August 1, 1979
WA-RD 512.3
Authors: 
William R. Bidlake, Emily L. Inkpen, Lonna M. Frans.
Originator: 
Washington (State). Dept. of Transportation.
Publication Date: 
Saturday, June 1, 2002