TYAGI, D O. <br/><br/>
A Textbook of Environmental Chemistry. 

 - New Delhi.  Anmol publications pvt ltd.  1996 
 - 4004p. 
<br/><br/><label>ISBN: </label>81 7041 352 4 
<br/><br/><label>Dewey Class. No.: </label>577.14077