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paper

Letter to the Committee of the Library of Classics of Philosophy written 03.03.1954

Letter from Kazimierz Ajdukiewicz written 26.02.1961

Paper by Janina Makota presented 18.06.1956

Letter to Kazimierz Twardowski written 09.09.1934

Letter to the Committee of the Library of Classics of Philosophy written 11.03.1952

Letter from Stefan Żółkiewski written in 03.01.1968

Postcard to Kazimierz Twardowski written 10.08.1937

Letter from Roman Suszko written 15.02.1965

Letter from Kazimierz Ajdukiewicz written 2/26/1961

Letter to Stefan Żółkiewski written in 06.03.1966

Letter from Stefan Żółkiewski written in 26.11.1965

Letter from Irena Sławińska written 1/31/1959