Singh, Raj Kumar <br/><br/>
Environmental Studies / 
Raj Kumar Singh 
 - New Delhi :  Tata McGraw Hill Education,  2012 
 - xvi, 150 p. ;  22 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>9780071072656 0071072659 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental science<br/>Environmental policy<br/>Environmental engineering