Nautiyal. Shivanand <br/><br/>
Paryavaran  samasya aur samadhan 

 - New Delhi  Samayik prakashan  2012 
 - 432p. 
<br/><br/><label>ISBN: </label>8171380670 
<br/><br/><label>Subjects--Index Terms: </label>Environmental protection Environmental pollution 
<br/><br/><label>Universal Decimal Class. No.: </label>502.17=H  / NAV