Srivastava, Y.N. <br/><br/>
Environmental pollution  Yogendra N. Srivastava. 

 - New Delhi  Ashish Publishing House  1989 
 - 83p., 22cm. 
<br/><br/><label>ISBN: </label>81-7024-210-x. 
<br/><br/><label>Dewey Class. No.: </label>614.7,  / S65E