Polish Academy of Science

Polish Academy of Science

Letter to the Polish Academy of Science written 04.10.1964

Letter to Kazimierz Wyka written 02.07.1967

Letter to the Polish Academy of Science written 22.04.1965

Invitation to scientific discussion written n/d

Letter to the Polish Academy of Science written 31.03.1965

Letter to Stefan Morawski written 23.06.1967

Letter to the Polish Academy of Science written 10.09.1963

Letter from Stefan Żółkiewski written in 15.03.1968

Letter from Kazimierz Wyka written 19.02.1967

Letter to the Polish Academy of Science written 17.05.1966

Letter to the Polish Academy of Science written 19.10.1963

Letter from Stefan Żółkiewski written in 25.11.1967