TY  - GEN
AU  - Chatterjee, B. N.
AU  - Maiti, S. ;Mandal, B. K.
TI  - Cropping system theory & practice: theory and practice
SN  - 812040419 X
U1  - 631.558 
PY  - 1989///
CY  - New Delhi
PB  - Oxford & IBH
KW  - CROPPING SYSTEM
KW  - CROP SCIENCE
KW  - AGRICULTURE
ER  -