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Zagadnienia Ekonomiki Rolnej > 2016 > 1(346) > 80-96
Journal of Agribusiness and Rural Development > 2015 > 3(37) > 477-485
Zagadnienia Ekonomiki Rolnej > 2016 > 1(346) > 80-96
Journal of Agribusiness and Rural Development > 2015 > 3(37) > 477-485