prepared by the Railway Association of Canada in partnership with Environment Canada ; for the Transportation Systems Branch, Air Pollution Prevention Directorate, Environment Canada
sponsored by ASTM Committee E-47 on Biological Effects and Environmental Fate, Atlanta, GA, 16-18 April 1989 ; W. G. Landis and W. H. van der Schalie, editors
prepared by the United States Environmental Protection Agency, Region V and Wisconsin Department of Natural Resources with the assistance of ESEI - Ecolsciences Environmental Group
sponsored by the American Institute of Biology and the Applied and Aquatic Section of the Ecological Society of America and ASTM Committee E-47 on Biological Effects and Environmental Fate, Grand Forks, ND, 8 Aug. 1983 ; Terence P. Boyle, editor