Kumar,Arvind  <br/><br/>
Verms & Vermitechnology 
/ by Arvind Kumar 
 - New Delhi:  A.P.H. Publishing Corporation,   2005.  
 - x,200p.  
<br/><br/><label>ISBN: </label>8176489387 
<br/><br/><label>Dewey Class. No.: </label>639.75  / KUM/V