Agricultural policies for sustainable management use of natural resourses in africa/ 
Food and agriculture organisation of the united nations international institute of tropical agriculture 
 - Nigeria  FAO  1999 
 - iii,18pg illus  pbk 
<br/><br/><label>ISBN: </label>9781311665 
<br/><br/><label>LC Class. No.: </label>S 471 .A3 1999