Ayodhya Singh <br/><br/>
Textbook of environmental chemistry  BOOK 

 - New Delhi  Campus Books  22 
 -  xii, 542p 
<br/><br/><br/>eng 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental chemistry
<br/><br/><label>Dewey Class. No.: </label>628  / AYT