The economics of tropical farming systems /
Upton, Martin.
The economics of tropical farming systems / Martin Upton. - Cambridge ; New York : Cambridge University Press, 1996. - xiv, 374 p. : ill. ; 24 cm. - Wye studies in agricultural and rural development .
The economics of tropical farming systems / Martin Upton. - Cambridge ; New York : Cambridge University Press, 1996. - xiv, 374 p. : ill. ; 24 cm. - Wye studies in agricultural and rural development .