scientific issues

scientific issues

Letter from Stefan Żółkiewski written in 29.05.1966

Letter from Irena Krońska written in 31.03.1947

Letter from Irena Krońska written in 10.07.1947

Letter from Irena Krońska written in 07.08.1947

Letter to Irena Krońska written in 12.01.1955

Postcard from Henryk Mehlberg written in n.d.

Attachment to Roman Ingarden’s letter written in 21.12.1954