Description
Item Description:"Research and Development"--Cover.
"Prepared for Office of Water Regulations and Standards, Criteria and Standards Division"--Cover.
"Department of Biological Sciences, Kent State University."
U.S. Army Corps of Engineers Waterways Experiment Station, Environmental Laboratory."."
"Freshwater Division, Corvallis Environmental Research Laboratory."
"February 1981."
"EPA-600/3-81-012."
Physical Description:vi, 41 pages : illustrations ; 28 cm.
Bibliography:Bibliography: pages 37-41.