Biological aspects of freshwater pollution :  proceedings of the Course held at the Joint Research Centre of the Commission of the European Communities, Ispra, Italy, 5-9 June 1978 / 
edited by O. Ravera 
 - Oxford :  Pergamon Press,  1979 
 - 214 p. 
<br/><br/><label>ISBN: </label>0080234429 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water--Pollution<br/>Freshwater ecology