TY  - BOOK
AU  - McCann,James C
TI  - Maize and gravce: : Africa's encounter with a new world Crop 1500 - 2000
SN  - 0674017188
AV  - HIS SB191.M2M14 
PY  - 2005///
CY  - Cambridge
PB  - Harvard University Press
KW  - Corn - Africa History
ER  -