Nichols, David <br/><br/>
Echinoderms/ 
by David Nichols 
 - 4th (revised) ed. 
 - London,  : Hutchinson  ,1969. 
 - 192 p.  illus. 
 - Hutchinson University Library: Biological sciences .
<br/><br/>Bibliography: p. [176]-184. 
<br/><br/><label>ISBN: </label>0090659937 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Echinodermata.
<br/><br/><label>Dewey Class. No.: </label>593.9 NIC/E