Agricultural intensification and environment in tropical areas :  Seminar, Brussels, 5-6 June 1990 : proceedings / 
edited by R. Deller�e & J.-J. Symoens.- 
 - 202 p.  ill.  25 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Source: </label>B-12882 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural ecology--Tropics.<br/>Agriculture--Environmental aspects.
<br/><br/><label>LC Class. No.: </label>SB111. A47  / .A47