Palanisamy, P N <br/><br/>
Environmental science 

 - 2 
 - New Delhi  Pearson  2013 
 - xxxviii, 725p.  
<br/><br/><label>ISBN: </label>9788131799291 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecosystems<br/>Environmental pollution<br/>Environmental science<br/>Natural resources<br/>Water treatment methods