Agarwal S.K. <br/><br/>
Environmental scenario for 21st century/ 
Dr. S.K Agarwal 
 - New Delhi :  APH Publishing Wrp,  2003 
 - xvi,480pages   22cm 
<br/><br/>Includes Bibliographical References and Index 
<br/><br/><label>ISBN: </label>8176484180