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Stanisław Winnicki
Institute of Technology and Life Sciences in Falenty, Poznań Branch, Biskupińska 67, 60-463 Poznań, Poland
Jerzy Lech Jugowar
Institute of Technology and Life Sciences in Falenty, Poznań Branch, Biskupińska 67, 60-463 Poznań, Poland
Zbigniew Sobek
Poznań University Life Sciences, Department of Genetics and Animal Breeding, Wołyńska 33, 60-637 Poznań, Poland