Purchon, R. D. <br/><br/>
Biological of the mollusca 

 - London  Pergamon press  1968 
 - International series of monographs in pure and applied biology, zoology division  40 .
<br/><br/><label>Subjects--Index Terms: </label>Mollusca, zoology  Mollusca  zoology  
<br/><br/><label>Dewey Class. No.: </label>594