Clark, Ailsa McGown. <br/><br/>
Starfishes and related echinoderms / 
Ailsa M. Clak. 
 - 3rd ed. 
 - London :  British Museum,  1977. 
 - 160 p. :  ill. ;  21 cm. 
<br/><br/>Includes bibliographies. 
<br/><br/> Open access. 
<br/><br/><label>ISBN: </label>0876664664 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Echinodermata.