United States 

 Environmental Protection 

 Agency 



Environmental Research 



Laboratory 



Duluth MN 55804 



EPA-600/3-78-076 

 August 1978 



Pq- £23 / S*\l U^'Ttesearch and Development 



SEPA 



Proceedings 

 of the First 



and Second USA - USSR 

 Symposia on the Effects 



of Pollutants 



Upon Aquatic 



Ecosystems 



W H I 



DOCUMENT 



COLLECTION 



Volume I 



Duluth , Minnesota 



USA Symposium 

 October 21 -23 ,1975 



Volume II 



Borok , Jaroslavl Oblast 

 USSR Symposium 

 June 22 -26 ,1976 



