scientific issues

scientific issues

Letter from Stefan Żółkiewski written in 29.05.1966

Letter from Irena Krońska written in 12.07.1946

Letter from Irena Krońska written in 26.05.1969

Letter from Stefan Żółkiewski written in 07.07.1967

Attachment to Roman Ingarden’s letter written in 21.12.1954

Letter from Irena Krońska written in 10.04.1947

Postcard from Henryk Mehlberg written in n.d.