Polish Academy of Science

Polish Academy of Science

Letter to the Polish Academy of Science written 07.03.1966

Letter from Stefan Żółkiewski written in 15.03.1968

Letter from Stefan Żółkiewski written in n.d.

Letter to the Polish Academy of Science written 10.02.1966

Letter from Kazimierz Wyka written 19.02.1967

Letter to Tadeusz Kotarbiński written 23.02.1961

Letter to Stefan Morawski written 23.06.1967

Letter to Stefan Morawski written 26.06.1967

Letter to the Polish Academy of Science written 17.05.1966

Letter from Konstanty Michalski written 07.04.1939

Letter from Ksawery Piwocki written 27.12.1964

Letter to the Polish Academy of Science written 31.03.1965