WALLIS, J.A. NICHOLAS. <br/><br/>
Intensified system of farming in the tropics and subtrapics 

 - Washington  The world bank  1997 
 - xiv, 203 p 
<br/><br/><label>ISBN: </label>821339443 
<br/><br/><label>Dewey Class. No.: </label>384.6091734