TY  - BOOK
AU  - Ruthenberg,Hans
AU  - MacArthur,J.D.
TI  - Farming systems in the tropics 
SN  - 019859481X 
AV  - S494.5.S95 R81
PY  - 1980///
CY  - Oxford, New York
PB  - Oxford University Press
KW  -  
KW  - Agricultural systems
KW  - Tropics
KW  - Farm management
ER  -