Archive of Science PAN and PAU in Cracow

Archive of Science PAN and PAU in Cracow

Letter from Hans Cornelius written 14.12.1937

Letter from Konstanty Michalski written 02.05.1943 or 1944

Letter from Konstanty Michalski written 25.02.1938

Postcard from Stefan Morawski written 12.08.1967

Letter from Ludwig Landgrebe written 27.12.1937

Letter from Hans Cornelius written 01.01.1938