Wright Richard T <br/><br/>
Environmental science  toward a sustainable future 
Richard T Wright   
 - New Delhi  Prentice Hall of India  2007 
 - xxii;621p. 
<br/><br/><label>ISBN: </label>812033065X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>eco systems-basic units of the natural world<br/>human population<br/>ethics
<br/><br/><label>Dewey Class. No.: </label>363.7  / WRI