TY  - BOOK
AU  - Upton,Martin
TI  - The economics of tropical farming systems 
T2  - Wye studies in agricultural and rural development
SN  - 0521482895
U1  - 33:63 
PY  - 1996///
CY  - New York
PB  - Cambridge University Press
KW  - agriculture - economic aspects - Africa
KW  - rural development
KW  - tropical forming systems
ER  -