VOLUME I 



PROCEEDINGS OF THE FIRST USA-USSR 

 SYMPOSIUM ON THE 

 EFFECTS OF POLLUTANTS UPON AQUATIC ECOSYSTEMS 



October 21-23, 1975 



Duluth, Minnesota 



USA 



Edited by 

 Donald I. Mount 



ENVIRONMENTAL RESEARCH LABORATORY-DULUTH 



OFFICE OF RESEARCH AND DEVELOPMENT 



U.S. ENVIRONMENTAL PROTECTION AGENCY 



DULUTH, MINNESOTA 55804 



