Kumar,Aravind <br/><br/>
Environmental challenges of the 21st century 

 - New Delhi  A.P.H Publishing corporation  2003 
 - xi,673p. 
<br/><br/> include index 
<br/><br/><label>ISBN: </label>81 7648 466 7 
<br/><br/><label>Dewey Class. No.: </label>363.7 KU'03