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K. T. Witczak (2020) “Ugrofinizmy w języku jaćwieskim [Finno-Ugric borrowings in Yatvingian]”, in Acta Baltico-Slavica (in Polish), volume 44,
K. T. Witczak (2020) “Ugrofinizmy w języku jaćwieskim [Finno-Ugric borrowings in Yatvingian]”, in Acta Baltico-Slavica (in Polish), volume 44, →DOI