Philips, David J H <br/><br/>
Quantitative aquatic biological indicators 

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 - Applied Science Publishers Ltd., London  1980 
 - 488 
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<br/><br/><label>ISBN: </label>  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Limnology-- Research & Statistical methods
<br/><br/><label>Dewey Class. No.: </label>577.6072  PHI-Q