TY  - BOOK
AU  - Duckman, A. N. and others,
TI  - Farming Systems of the World
SN  - 701113618
U1  - 631 
PY  - 1971///
CY  - New Delhi
PB  - Allied Publishers Pvt. Ltd.
KW  - Farming Systems
KW  - Techniques, equipment & materials
ER  -