Pol, F. van der   <br/><br/>
Soil mining: an unseen contributor to farm income in southern Mali  (Book) 

 - Amsterdam  Royal Tropical Institute  1992 
 - 47 p.  24 cm. 
<br/><br/><label>ISBN: </label>9068328077 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture--Mali
<br/><br/><label>Universal Decimal Class. No.: </label>631.4(662) POL  / 10491