TY  - GEN
AU  - Onwueme, I C
TI  - Tropical tuber crops: Yams, cassava, sweet potato and cocoyams
SN  - 0  471  99608  4
U1  - 633.  409  13 ONW 
CY  - Chichester, John Wiley & Sons INC
KW  - Root-crops-tropics/tuber-tropics/tropical crops
ER  -