Asthana, Dr. D. K. <br/><br/>
A textbook of environmental studies / 
D. K. Asthana and Meera Asthana. 
 - New Delhi :  S. Chand & Company Ltd.,  c2006 [reprinted 2007]. 
 - xvii, 460 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>8121927641 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental Science.
<br/><br/><label>Dewey Class. No.: </label>372.357  / TRF