TY  - BOOK
AU  - McCann James C.
TI  - Maize and grace:  Africa's encounter with a new world crop, 1500-2000.   
SN  - 9780674025571
U1  - X9(J385).6.P00<- J00, P5 
PY  - 2005///
CY  - Cambridge
PB  - Harvard University Press        
KW  - Economics
N1  - Bibliography: P 261-74
ER  -