Tyagi, O D <br/><br/>
A textbook of enviromental chemistry 
/ by O. D. Tyagi and M. Mehra 
 - 1st ed. rep.  
 - New Delhi:  Anmol Publications Pvt. Ltd.,  1994. 
 - 404p. 
<br/><br/><label>ISBN: </label>8170413524 
<br/><br/><label>Dewey Class. No.: </label>614.7  / TYA/A