The Economics of tropical farming systems
Upton, M.
The Economics of tropical farming systems Martin Upton - Cambridge Cambridge University Press 1996 - vi, 374P.:ill.; Pbk
052163511
Farming systems--Agricultural systems
The Economics of tropical farming systems Martin Upton - Cambridge Cambridge University Press 1996 - vi, 374P.:ill.; Pbk
052163511
Farming systems--Agricultural systems