TY  - GEN
AU  - Degras, L.
TI  - The yam : : a tropical root crop 
SN  - 0333574567
U1  - 635.23 
PY  - 1993///
CY  - London : 
PB  - Macmillan
KW  - Root crops - Tropics
KW  - Yams
KW  - Yams as food
N1  - Includes bibliographical references and index
ER  -