dr.s.s   dara  dr. mishra <br/><br/>
a text book of enviormental chemistry and pollution control (with energy,ecology ,� 

 - RAM NAGAR ,NEW DELHI  S.CHAND &COMPANY LTD  
<br/><br/><label>ISBN: </label>81-219-0883-3 
<br/><br/><label>Dewey Class. No.: </label>541  / DAR/