TY  - BK
AU  - Pol,F.van der
TI  - Soil mining:  An unseen contributor to farm income in Southern Mali
T2  - Royal Tropical Institute: Bulletin
SN  - 90-6832-807-7
SN  - 0922-7911
PY  - 1992///
CY  - Amsterdam (Netherlands)
PB  - Royal Tropical Institute, 
KW  - Africa
KW  - Erosion
KW  - Income
KW  - Mali
KW  - Nutrient availability
KW  - Soil deterioration
KW  - Soil fertility
KW  - AGROVOC
ER  -