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Paweł Przybylski
Forest Research Institute, Department of Silviculture and Genetics, Sękocin Stary, Braci Leśnej 3, 05-090 Raszyn, Poland, phone: +48 22 7150460, fax: +48 22 7200397
Jan Matras
Forest Research Institute, Department of Silviculture and Genetics, Sękocin Stary, Braci Leśnej 3, 05-090 Raszyn, Poland, phone: +48 22 7150460, fax: +48 22 7200397
Małgorzata Sułkowska
Forest Research Institute, Department of Silviculture and Genetics, Sękocin Stary, Braci Leśnej 3, 05-090 Raszyn, Poland, phone: +48 22 7150460, fax: +48 22 7200397