TY  - BOOK
AU  - Palaniappan,  S P
AU  - Sivaraman, K
TI  - Cropping system in the tropics : principles and management
U1  - 631.584 
PY  - 1996///
CY  - New Delhi
PB  - New Age International
KW  - Multiple cropping
KW  - On farm research
ER  -