Christensen, J Muller <br/><br/>
Seashells:  Bivalves of the British and northern European seas  / 
J Muller Christensen 
 - New York:  Penguin Books,  1978. 
<br/><br/> Revised and adapted by S Peter Dance 
<br/><br/><label>ISBN: </label>0140630120 
<br/><br/><label>Dewey Class. No.: </label>594.110447  / CHR/S