Environmental science:  a practical manual / 
ed. by Swarajya bLakshmi...[et al.] 
 - Hyderabad :  B.S. Pub.,  2010 
 - xii, 133 p. ;  24 cm. 
<br/><br/>References : p. 133 
<br/><br/><label>ISBN: </label>9788178002286 (pbk.)  Rs. 110.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental sciences
<br/><br/><label>Dewey Class. No.: </label>550