Tag: Borid Osipovich Sibor
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Borid Osipovich Sibor (1880-1961).
Borid Osipovich Sibor (1880-1961), violinist, Professor of violin (1921-1951, since 1923 – profesof).
Borid Osipovich Sibor (1880-1961), violinist, Professor of violin (1921-1951, since 1923 – profesof).