TY  - GEN
AU  - Donovan , Graeme
AU  - Casey  , Frank
TI  - Soil fertility management In sub-sharan Africa
SN  - 0821342363
U1  - 631.4220967 
PY  - 1998///
CY  - Washington
PB  - The world Bank
KW  - SOIL FERTILITY-AFRICA
KW  - AGRICULTURE
ER  -