Pushpa Dahiya <br/><br/>
Environmental science : a new approach 

 - New Delhi  Narosa Publishing  2013 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>9788184870756 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecosystems<br/>Environmental pollution<br/>Environmental science<br/>Natural resources