Georg Wilhelm Friedrich Hegel

Georg Wilhelm Friedrich Hegel

Letter from Irena Krońska written in 19.01.1955

Letter from Stefan Szuman written 29.01.1943

Letter from Stefan Szuman written 24.02.1943

Letter from Stefan Morawski written 08.05.1964

Attachment to Irena Krońska’s letter written in 21.09.1968

Letter from Irena Krońska written in 11.11.1965

Letter from Irena Krońska written in 16.01.1968

Letter to the Polish Academy of Science written 24.09.1969