Poonia, M P ; Sharma, S C <br/><br/>
Environmental studies : concepts, impacts, mitigation and management 

 - Khanna book publishing co.(p) ltd.  New Delhi  2019 
 - xix,438 
<br/><br/>
<br/><br/><br/>E 
<br/><br/><label>Universal Decimal Class. No.: </label>301.3