Agarwala, S. P., <br/><br/>
Environmental Studies 
S. P. Agarwala 
 - New Delhi :  Narosa Publishing House,  c2006. 
 - 220 p.:  [140][141] 
<br/><br/><label>ISBN: </label>9788173197857 
<br/><br/><label>Dewey Class. No.: </label>363.7  / AGA/ENV