TY  - BOOK
AU  - Toon Defoer
TI  - Moring methodologies: : learning about in intergrated soil fertility management in sub- saharan Africa
SN  - 90-5808-319-5
AV  - S599.5.D1D65 
PY  - 2000///
CY  - Aula
PB  - :Wageningen University
KW  - Soil Fertility- Africa
KW  -  Sub- saharah Management
N1  - Includes bibliographical referrence and index
ER  -