LAL, S.S. <br/><br/>
TEXTBOOK OF PRACTICAL ZOOLOGY : INVERTEBRATE 

 - 7th Ed. 
 - Meerut  Rastogi Publications, Meerut   1996 
<br/><br/><label>ISBN: </label>81 7133 261 7 
<br/><br/><label>Dewey Class. No.: </label>592  / LAL/TE