Asthana S K and Meera, Asthana  <br/><br/>
Environment: Problems And Solution 

 - New Delhi:  S.Chand & Co. (Pvt) Ltd,   1998 
 - 433 p.  PB 
<br/><br/> General 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environment: Problems And Solution 
<br/><br/><label>Universal Decimal Class. No.: </label>309.2  / AST-E