00803cam a2200217 a 4500020002200000040000800022082002600030110005100056245022600107260007900333300002500412490001100437650001500448650001500463650001900478650001900497650001600516700001700532700001900549700001700568  a0889364982 (pbk.)  cDLC00a630 IDR 1987 C142 Co.2 aInternational Society for Tropical Root Crops.00aTropical root crops :broot crops and the African food crisis : proceedings of the Third Triennial Symposium of the International Society for Tropical Root Crops--Africa Branch held in Owerri, Nigeria, 17-23 August 1986 /  aOttawa, Ont., Canada :bInternational Development Research Centre,cc1987.  aiv, 197 p. ;c25 cm.1 aIDRC ; 0aRoot crops 0aRoot crops 0aTropical crops 0aTropical crops 0aFood supply1 aTerry, E. R.1 aAkoroda, M. O.1 aArene, O. B.