CHATWAL, G.R. HARISH SHARMA <br/><br/>
TEXTBOOK OF ENVIRONMENTAL STUDIES 

 - 1st Ed. 
 - Bombay  Himalaya Publishing House, Bombay   2004 
<br/><br/><label>ISBN: </label>81 8318 013 2 
<br/><br/><label>Dewey Class. No.: </label>577  / CHA/TE