Asthana, D. K. <br/><br/>
A textbook of environmental studies / 
D. K. Asthana 
 - New Delhi :  S. Chand & Company,  2006 
<br/><br/>Includes references & indexes. 
<br/><br/><label>ISBN: </label>9788121927642 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental studies
<br/><br/><label>Dewey Class. No.: </label>628  / AST