Polish Academy of Science

Polish Academy of Science

Letter to the Polish Academy of Science written 05.03.1969

Postcard from Stefan Morawski written N/D 2

Letter from Stefan Żółkiewski written in 25.11.1967

Letter to the Polish Academy of Science written 16.11.1968

Letter to the Polish Academy of Science written 24.09.1969

Letter to the Polish Academy of Science written 28.04.1964

Letter to the Polish Academy of Science written 22.12.1965

Letter from Henryk Markiewicz written 15.07.1963

Letter from Ksawery Piwocki written 11.11.1964

Letter from Stefan Żółkiewski written 14.04.1965

Letter from Witold Nowacki written 31.08.1969

Letter to the Polish Academy of Science written 10.02.1966