habilitation thesis

habilitation thesis

Postcard from Stefan Morawski written 16.07.1966

Letter from Kazimierz Twardowski written 19.07.1923

Letter to Kazimierz Twardowski written 01.01.1924

Letter to Kazimierz Twardowski written 02.05.1922

Letter from Kazimierz Twardowski written 08.01.1925

Letter from Kazimierz Twardowski written 11.08.1923

Letter from Kazimierz Twardowski written 10.02.1924

Letter from Kazimierz Twardowski written 06.12.1924

Letter from Kazimierz Twardowski written 13.05.1924

Letter to Kazimierz Twardowski written 01.04.1925

Letter to Kazimierz Twardowski written 28.03.1922

Letter to Mieczysław Wallis written 17.01.1962