TY  - BOOK
AU  - Defoer, Toon
TI  - Managing soil fertility in the tropics: building common knowledge: participatory learning and action research
SN  - 9068321285
AV  - FAO S 633.5 T76M36 2000
PY  - 2000///
CY  - FAO
PB  - Rome
KW  - managing soil fertility
ER  -