Vries, Frits Penning de <br/><br/>
Systems approaches for agricultural development / 
Ed. by Frits Penning de Vries, Paul Teng and Klaas Metselaar 
 - Dordrecht  Kluwer Academic  1993 
 - xii, 542p 
 - Systems approaches for sustainable agricultural development ;  2 .
<br/><br/><label>ISBN: </label>0792318803 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Congresses<br/>Mathematical Models<br/>Crops<br/>Agricultural Systems<br/>Agricultural economics<br/>Economics
<br/><br/><label>Dewey Class. No.: </label>338.1  / DEV