Environmental challenges of the 21st century 
edited by S. Radha and Amar Singh, Sankhyan. 
 - New Delhi  Deep and Deep  2002 
 - xvii, 510p., 22cm. 
<br/><br/><label>ISBN: </label>81-7629-359-8. 
<br/><br/><label>Dewey Class. No.: </label>363.7  / E76E