Ghosh G. K. <br/><br/>
Environmental pollution : A scientific dimension 

 - Delhi, India  Ashish Publishing House  1992 
 - x,250p 
<br/><br/><label>ISBN: </label>81-7024-494-3 
<br/><br/><label>Source: </label>Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental Education