TY  - BOOK
AU  - Chatterjee, B.N.
TI  - Cropping system; theory & practice
U1  - 631.58 M4 
PY  - 1984///
CY  - New Delhi
PB  - Oxford
KW  - Maiti, S.
KW  - B.N.Chatterjee and S.Maiti.
KW  - Cropping systems
ER  -