Verma, P S <br/><br/>
A Manual of Practical Zoology:  Invertebrates/ 

 - Fifteenth edition 
 - New Delhi:  S. Chand,  2022. 
<br/><br/><label>ISBN: </label>9788121908290 
<br/><br/><label>Dewey Class. No.: </label>592  / VER.M