Sethi, Inderjeet. <br/><br/>
Environmental pollution  causes, effects and control 
by Inderjeet Sethi, M. S. Sethi, and S. A. Iqbal. 
 - New Delhi  Commonwealth  1991 
 - xi, 304p. 
<br/><br/><label>Dewey Class. No.: </label>363.73  / N91