TY  - BOOK
AU  - Upton, Martin.
TI  - The economics of tropical farming systems
SN  - 0521483409
U1  - 338.10913 
PY  - 1996///
CY  - Cambridge
PB  - Cambridge University Press
KW  - Agriculture
KW  - Economic aspects
KW  - Africa
KW  - Tropics
N1  - Includes bibliographical references and index
ER  -