TY  - BOOK
AU  - Upton, Martin.
AU  - Anthonio, Q.B.O.
TI  - Farming as a business
T2  - Oxford tropical handbooks
U1  - 631.0913 
PY  - 1979///
CY  - Oxford
PB  - Oxford University
KW  - Agricultura
KW  - Trópicos
ER  -