TY  - BOOK
AU  - 
TI  - Nutrients on the move: soil fertility dynamics in African farming systems 
SN  - 1899825568
AV  - S633  .N81
PY  - 2000///
CY  - London
PB  - International Institute for Environment and Development
KW  -  
KW  - Soils -- Fertilizer movement -- Africa -- Case studies.
KW  - Agricultural systems -- Africa -- Case studies.
ER  -