Étienne de Condillac

Étienne de Condillac

Certificate from Irena Krońska written in 10.06.1955

Letter to Władysław Tatarkiewicz written 09.12.1954

Letter to Tadeusz Kotarbiński written 12.10.1949

Letter to Irena Krońska written in 21.12.1954

Letter to Władysław Tatarkiewicz written 03.05.1950

Letter to Irena Krońska written in 07.04.1955