TY  - BOOK
AU  - Norman, Devid
AU  - Douglas, Malcolm
TI  - Farming systems development and soil conservation
SN  - 9788170355125
U1  - 631.8 N 781 F 
PY  - 2007///
CY  - Delhi
PB  - Daya Publishing Hourse
KW  - Soil
ER  -