F?re R, S Grosskopf and S Kraft (1987). “Technical Efficiency and Size: the Case of Illinois Grain Farms.” European Review of Agricultural Economic 14(4): 367-381.

F?re R, S Grosskopf and S Kraft (1987). “Technical Efficiency and Size: the Case of Illinois Grain Farms.” European Review of Agricultural Economic 14(4): 367-381.

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