TY  - BOOK
AU  - Palaniappan, SP.
AU  - Sivaraman, K.
TI  - Cropping systems in the tropics: Principles and management
SN  - 812240667X
U1  - 633 P 172 C 
PY  - 1996///
CY  - New Delhi
PB  - New Age International
KW  - Cropping system
ER  -