TY  - BOOK
ED  - Food and Agriculture Organization of the United Nations.
TI  - Improved production system as an alternative to shifting cultivation
U1  - 631 
PY  - 1984///
CY  - Rome
PB  - FAO
KW  - Soil management
KW  - Shifting cultivation
KW  - Cropping systems
KW  - Crop rotation
ER  -