Kapoor, B B S  <br/><br/>
पर्यावरणीय  ज्ञानखोश 
 Paryavaaniya gyaankhosh 

 - Rajasthan:   Madhu Publication,   1995 
 - 136p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environment 
<br/><br/><label>Universal Decimal Class. No.: </label>504(031)  / N5