Singh M.P <br/><br/>
Air Pollution and Environment 

 - New Delhi  Enkay Publishing House  2011 
 - 268p 
<br/><br/><br/>ENGLISH 
<br/><br/><label>ISBN: </label>93-80995-09-0 
<br/><br/><label>Dewey Class. No.: </label>628.53  / SIN