TY  - BOOK
AU  - Palaniappan, SP.
AU  - Sivaraman, K.
TI  - Cropping Systems in the Tropics Principles and Management 
SN  - 812240667X
U1  - 631..58 
PY  - 1996///
CY  - New Delhi 
PB  - New Age International (P) Limited Publishers 
ER  -