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Systema Porifera; 2 vols.  A Guide to the Classification of Sponges 

 - New York  Kluwer Academic/ Plenum Publishers  2002 
 - 2 vols.  28 cm. HB 
<br/><br/><label>ISBN: </label>0306472600 
<br/><br/><label>Dewey Class. No.: </label>693.4012  / SYS