scientific issues

scientific issues

Letter from Irena Krońska written in 18.03.1947

Letter from Stefan Żółkiewski written in 04.06.1966

Letter from Irena Krońska written in 10.07.1947

Letter from Stefan Żółkiewski written in 29.05.1966

Letter from Irena Krońska written in 31.03.1947

Letter from Irena Krońska written in 06.01.1947

Attachment to Roman Ingarden’s letter written in 21.12.1954