BOEF, WALTER,  DE.  WALTER DE, BOEF  KOJO AMANOR,  KATE  WELLARD AND ANTONY  BEBBINGTON. <br/><br/>
CULTIVATING KNOWLEDGE,GENETIC DIVERSITY:  FARMER EXPERIMENTATION AND CROP RESEARCH. 

 - LONDON,  INTERMEDIATE TECHNOLOGY PUBLICATIONS:  1993. 
<br/><br/><label>ISBN: </label>1853392073 
<br/><br/><label>Dewey Class. No.: </label>631 .52  BOE