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Wojciech Gotkiewicz
Dr hab. Wojciech Gotkiewicz, prof. nadzw., Department of Agribusiness and Environmental Economics, University of Warmia and Mazury In Olsztyn, Plac Łódzki 2, 10-727 Olsztyn, Poland
Paweł Sternik
Mgr inż. Paweł Sternik, Department of Agricular Chemistry and Environ-ment Protection, University of Warmia and Mazury In Olsztyn, Oczapowskiego 8 St., 10-744 Olsztyn, Poland