PAN

PAN

Letter to Stefan Żółkiewski written in 21.10.1966

Letter to the Polish Academy of Science written 22.04.1965

Letter to Władysław Tatarkiewicz written 20.05.1961

Letter from Stefan Żółkiewski written in 25.11.1967

Letter from Stefan Żółkiewski written in 03.01.1968

Invitation to scientific discussion written n/d

Letter from Irena Krońska written in 10.11.1954

Letter from Roman Suszko written 15.02.1965

Letter to Władysław Tatarkiewicz written 10.05.1963

Letter from Stefan Żółkiewski written in 12.03.1966

Letter from Ksawery Piwocki written 11.11.1964

Letter from Stefan Żółkiewski written in 07.07.1967