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Agricultural Engineering > 2019 > Vol. 23, No. 1 > 49--57
Prace Instytutu Nafty i Gazu > 2009 > nr 162 > 263-268
Agricultural Engineering > 2019 > Vol. 23, No. 1 > 49--57
Prace Instytutu Nafty i Gazu > 2009 > nr 162 > 263-268