TY  - BK
AU  - Willcocks,J.
TI  - Agricultural engineering aspects of versitol management and why projects fail
PY  - 1989///
CY  - Harare (Zimbabwe)
PB  - IBSRAM, 
KW  - Africa
KW  - Agricultural engineering
KW  - Crop yield
KW  - AGROVOC
KW  - Soil chemistry
KW  - Soil management
KW  - Vertisols
ER  -