Kotpal, R.L. <br/><br/>
Porifera 
/ by R.L. Kotpal 
 - 7th ed. 
 - Meerut :  Rastogi Publications,  1976 
 - 130 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Zoology
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>Porifera
<br/><br/><label>Dewey Class. No.: </label>593.4  / KOT-P7