TY  - BOOK
AU  - Mukhopadhyay, A
TI  - Crops , costs and variations : an investigation based on farm management studies
SN  - 8170992478
U1  - 633 
PY  - 1990///
CY  - New Delhi
PB  - Mittal Publications
KW  - Cotton
KW  - Jower
KW  - Wheat
ER  -