Asthana, D.K., <br/><br/>
Textbook of environmental studies for undergraduate students 

 - New Delhi  S. Chand and Company  2006. 
 - xvii;460p.:  24 cm. 
<br/><br/> Includes bibliographical references and index.  
<br/><br/><label>ISBN: </label>9788121927642 
<br/><br/><label>Dewey Class. No.: </label>363.7 AST