HELLAWELL, J.M. <br/><br/>
BIOLOGICAL INDICATORS OF FRESHWATER POLLUTION AND ENVIRONMENTAL MANAGEMENT 

 - S.E. 
 - Estados Unidos  ELSEVIER APPLIED SCIENCE  1986 NEW YORK 
 - 545 
<br/><br/><label>ISBN: </label>1851660011 
<br/><br/><label>LCCN: </label>95003 
<br/><br/><label>Subjects--Topical Terms: </label><br/>CONTAMINACION
<br/><br/><label>Dewey Class. No.: </label>628.161