Modern Text of zoology Invertebrates/ 
Kotpal,R.L 
 - 1ST ED. 
 - MEERUT:  Rastogi Publications,  2013. 
 - 883p.p. 
<br/><br/><label>ISBN: </label>9788171339037 
<br/><br/><label>Dewey Class. No.: </label>592  / KOT/M