Bedard D, Petro S. 1997: Laboratory sediment bioassay report on Upper St. Clair River sediments in the vicinity of industrial point sources, 1994 &amp; 1995.
Bedard D, Petro S. 1997: Laboratory sediment bioassay report on Upper St. Clair River sediments in the vicinity of industrial point sources, 1994 &amp; 1995.