Wright, T. Richard   Boorse  F. Dorothy. <br/><br/>
Environmental Science : Toward A Sustainable Future. 

 - 12th ed. 
 - New Delhi  Pearson Education  2015 
 - 659p. 
<br/><br/><label>ISBN: </label>9789332555389 
<br/><br/><label>Dewey Class. No.: </label>333.7 WRI.