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De sociale Gevolgen van de mechanisatie in de landbouw
Jansen, A. J., (1968)
Analysing production technology and risk in organic and conventional Dutch arable farming using panel data
Gardebroek, Cornelis, (2010)
Het meten van de mechanisatie
Wijk, P. P., (1959)
The adoption process
Ban, A. W. van den, (1963)
Implications of a recent study on relations between farmers and advisers
Ban, A. W. van den, (1966)
Evaluation of rural extension