Biological aspects of freshwater pollution :  proceedings of the course held at the Joint Research Center of the Commission of the European Communities, Ispra, Italy, 5-9 June 1978 / 
edited by O. Ravera 
 - Oxford :  Published for the Commission of the European Communities by Pergamon,  1979 
 - 214 p. ;  25 cm. 
<br/><br/><label>ISBN: </label>0080234429 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water--Pollution--Environmental aspects--Congresses<br/>Freshwater ecology--Congresses<br/>Aquatic animals--Effect of water pollution on--Congresses