Tyagi, O D.  <br/><br/>
A textbook of environmental chemistry / 
O D Tyagi and M Mehra. 
 - 1st ed. 
 - New Delhi :  Anmol,  1992. 
 - 404 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>8170413524 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental chemistry
<br/><br/><label>Dewey Class. No.: </label>363.73  / TYT