Wallis,J.A.Nicholas <br/><br/>
Intensified Systems of Farming in the Tropics and Subtropics / J.A.Nicholas Wallis 

 - Washington,D.C  World Bank  1997 
 - xiii, 203p. 
 - World Bank Discussion Paper .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural Systems<br/>Agriculture<br/>Tropical Farming