Polish Academy of Science

Polish Academy of Science

Letter to Stefan Morawski written 23.06.1967

Letter from Ksawery Piwocki written 11.11.1964

Letter from Stefan Żółkiewski written in 03.01.1968

Letter to the Polish Academy of Science written 10.02.1966

Letter to the Polish Academy of Science written 15.09.1964

Letter from Kazimierz Wyka written 14.07.1967

Letter to the Polish Academy of Science written 01.07.1963

Letter to Kazimierz Wyka written 02.07.1967

Letter from Stefan Morawski written 03.06.1964

Letter from Stefan Morawski written 27.10.1965

Letter from Stefan Żółkiewski written in 29.05.1967

Letter to the Polish Academy of Science written 17.05.1966