conference

conference

Letter from Konstanty Michalski written 11.03.1938

Letter from Kazimierz Ajdukiewicz written 2/13/1953

Letter from Kazimierz Ajdukiewicz written 13.02.1953

Letter to Tadeusz Kotarbiński written 29.05.1953

Letter from Tadeusz Czeżowski written 31.10.1965

Letter from Tadeusz Czeżowski written 09.04.1966

Letter from Anna Teresa Tymieniecka written 21.03.1969