TY  - BOOK
AU  - Chatterjee,B.N, Maiti, S & Mandal, B.K
AU  - x
TI  - Cropping system: Theory and practice
SN  - 812040419x
U1  - 631/C495c 
PY  - 1989///
CY  - New Delhi
PB  - Oxford & IBH pub.
KW  - Farm produce
KW  - Agriculture
N1  - Includes
ER  -