Chatwal, G R <br/><br/>
Text book of environmental studies. 

 - 1st 
 - Mumbai  HIMALAYA PUBLISHSING HOUSE  2004 
 - v,459p p. 
<br/><br/><label>ISBN: </label>81-8318-060-4 
<br/><br/><label>Subjects--Index Terms: </label>Environmental Science