Talwar,Prakah  <br/><br/>
Environmental management 
/ by Prakah Talwar 
 - Delhi:  Isha Books,  2006. 
 - 259p. 
<br/><br/><label>ISBN: </label>8182053412 
<br/><br/><label>Dewey Class. No.: </label>658.4095  / TAL/E