TY  - BOOK
AU  - Onwueme, I. C.
AU  - Sinha, T. D.
TI  - Field crop production in tropical Africa: principles and practice 
AV  - SB123.2 .O58
PY  - 1991///
CY  - Netherlands
PB  - CTA, Ede
KW  - Crop production-tropical Africa
ER  -