Tropical root crops :  root crops and the African food crisis :  proceedings of the 3rd trienniel Symposium of the International Society for Tropical Roots Crops - Africa Branch held in Owerri, Nigeria, 17-23 August 1986 / 
editors, E. R. Terry, M. O. Akoroda, and O. B. Arene 
 - Ottawa :  IDRC,  1987 
 - 197 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>0889364982 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Root--crops--Tropics--Congresses