Paryavaran Shikshan sahayak pustak: Rajasthan me kaksha VI se VII tak padane vale adhyapako ke liye (Hindi) 

 - Ahmedabad  Centre for Envirnment Ed  2006 
 - 207 
<br/><br/><label>ISBN: </label>81-89587-05-6 
<br/><br/><label>Dewey Class. No.: </label>372.357043