TY  - BOOK
AU  - Webster, Cyril Charles.
AU  - Wilson, Peter Northcote.
TI  - Agriculture in the tropics
T2  - Tropical agriculture series
U1  - 631.0913 
PY  - 1980///
CY  - London
PB  - Longman
KW  - Agricultura
KW  - Trópicos
ER  -