Srivastava Ashok Kumar <br/><br/>
Air pollution    Biopollutants in air    
Srivastava Ashok Kumar 
 - New Delhi   Ashish India          1991 
 - xiii,302p.  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geography - Environment
<br/><br/><label>Dewey Class. No.: </label>U:(G:558), N1