TY  - BOOK
AU  - Chatterjee,B.N..
AU  - Maiti,S..
TI  - Cropping system: theory and practice / 
U1  - 631.58 
PY  - 1984///
CY  - New Delhi : 
PB  - Oxford and IBH Publishing , 
KW  - CROPPING SYSTEM
N1  - NULL
ER  -