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An economic model for establishing prioritie for agricultural research and a test for the Brazilian economy
Ramalho de Castro, Jose Prazeres, (1974)
Über den organisatorisch-technischen Fortschritt in der Landwirtschaft
Seuster, Horst, (1984)
Technological change and worker participation in Europe
Fröhlich, Dieter, (1990)
Institutional determinants of technical change and agricultural productivity growth : Denmark, France and Great Britain, 1870 - 1965
Wade, William Windsor, (1973)