TY  - BK
AU  - Asafu-Agyei,J.N.
TI  - Maize-based cropping systems
T2  - CRI Crop Management Guide
PY  - 1993///
CY  - Tamale (Ghana)
PB  - CRI, 
KW  - Crop management
KW  - AGROVOC
KW  - Cropping systems
KW  - Multiple cropping
KW  - Zea mays
ER  -