TY  - BOOK
AU  - Hercilio de Freitas Valdemar
TI  - Soil management and conservation for small farms: strategies and methods of introduction, technologies and equipment 
SN  - 9789251044995
AV  - FAO S 599.3 B72H47 2000
PY  - 2000///
CY  - FAO
PB  - Rome
KW  - Soil management and conservation
ER  -