Clapham, W B <br/><br/>
Natural ecosytems 

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 - New York  Macmillan  1973 
 - viii, 248p.   
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<br/><br/><label>ISBN: </label>
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<br/><br/><label>Subjects--Index Terms: </label>Ecology  Environment  Biology  Ecosystems 
<br/><br/><label>Dewey Class. No.: </label>577.4