Kumar Arvind <br/><br/>
A text book of enviournmental science 

 - New Delhi  A P H Publishing  2004 
 - 376p 
<br/><br/><label>ISBN: </label>978-8176485890 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education
<br/><br/><label>Dewey Class. No.: </label>372.8 KUMT