KOPAL, R.L. <br/><br/>
Echinodermata / 
[by] R.L.Kopal 
 - 4th ed. 
 - Meerut  Rastogi pub.  1979 
 - ii, 172 p.- 
 - Zoology phylum books; 8 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Echinodermata.
<br/><br/><label>Dewey Class. No.: </label>593.9  / KOT