TY  - BOOK
AU  - Palanippan,SP .
TI  - Cropping systems in the tropics : principles and management / 
U1  - 631.58 
PY  - 1985///
CY  - New Delhi : 
PB  - Wiley Eastern , 
KW  - CULTIVATION AND HARVESTING
N1  - Include index
ER  -