Wright,Richard T. <br/><br/>
Environmental Science:  Toward a sustainable Future  

 - 11th ed 
 - New Delhi  PHI Learning  2011 
 - 674p. 
<br/><br/> P.B 
<br/><br/><label>ISBN: </label>9788120341296 
<br/><br/><label>Dewey Class. No.: </label>363.7 WRI