Polish Academy of Science

Polish Academy of Science

Letter from Stefan Żółkiewski written in n.d.

Letter to Stefan Morawski written 26.06.1967

Letter to the Polish Academy of Science written 22.12.1965

Letter from Stefan Żółkiewski written in 15.03.1968

Letter to Stefan Morawski written 23.06.1967

Letter from Roman Suszko written 15.02.1965

Letter to the Polish Academy of Science written 19.10.1963

Letter to the Polish Academy of Science written 10.09.1963

Letter from Polish Academy of Science written 21.04.1966

Letter to the Polish Academy of Science written 16.11.1968

Letter to the Polish Academy of Science written 01.07.1963

Letter to the Polish Academy of Science written 24.10.1963