Jeffries, Michael. <br/><br/>
Freshwater ecology : principles and applications / 
Michael Jeffries, Derek Mills 
 - London :  Belhaven Press,  c1990 
 - 285 p. :  illus, charts 
<br/><br/><label>ISBN: </label>1852931272 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Freshwater ecology.<br/>Man--influence On Nature.
<br/><br/><label>Dewey Class. No.: </label>574.5263  / J47F