TY  - BOOK
AU  - Das, N. R.
TI  - Tillage and crop production
SN  - 9788172335151
AV  - S604.D3 2008 
PY  - 2008///
CY  - Jodhpur, India
PB  - Scientific publishers
KW  - Tillage.
KW  - Cropping systems.
N1  - Includes bibliographical references
ER  -