Polish Academy of Science

Polish Academy of Science

Letter from Stefan Żółkiewski written in 19.03.1968

Letter from Stefan Żółkiewski written in 03.01.1968

Letter to the Polish Academy of Science written 28.04.1964

Letter to the Polish Academy of Science written 31.03.1965

Letter to Stefan Morawski written 26.06.1967

Letter to Stefan Morawski written 23.06.1967

Letter from Konstanty Michalski written 07.04.1939

Postcard from Stefan Morawski written N/D 2

Letter to the Polish Academy of Science written 04.10.1964

Letter from Polish Academy of Science written 21.04.1966

Letter from Stanisław Urbańczyk written 22.02.1965

Letter to Kazimierz Wyka written 02.07.1967