Singh, Raj Kumar, <br/><br/>
Environmental studies / 
Raj Kumar Singh. 
 - xvi, 150 pages :  illustrations ;  23 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9780071072656 (paperback)  RM28.24 0071072659 (paperback) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental sciences.<br/>Human ecology.<br/>Pollution.