TY  - BOOK
AU  - Norman,David
AU  - Malcolm,Douglas
TI  - Farming systems development and soil coservation
SN  - 8170355125
U1  - 631.45 
PY  - 2007///
CY  - Delhi
PB  - Daya publishing house
KW  - Farming systems
KW  - Soil Conservation
ER  -