Whiteley, Derek. <br/><br/>
The Oxford book of invertebrates:  protozoa, sponges, coelenterates, worms, molluscs, echinoderms, and arthropods (other than insects); 
illustrations by Derek Whiteley; text by David Nichols and John A. L. Cooke. 
 - London,  Oxford University Press,  1971. 
<br/><br/>Bibliography: p. 210. 
<br/><br/><label>ISBN: </label>019910008X  L.3.00 
<br/><br/><label>LCCN: </label>76871175 //r89 
<br/><br/><label>Nat. Bib. No.: </label>B71-22079 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Invertebrates.
<br/><br/><label>LC Class. No.: </label>QL362  / .W46 
<br/><br/><label>Dewey Class. No.: </label>592