Columbia subject headings:
Authors, Austrian--20th century--Correspondence.
Editors--Austria--Correspondence.
Ficker, Ludwig von, 1880-1967--Correspondence.
Harvard subject headings:
Authors, Austrian--20th century--Correspondence
Editors--Austria--Correspondence.
Ficker, Ludwig von, 1880-1967. Correspondence
Princeton subject headings:
Authors, Austrian--20th century--Correspondence.
Editors--Austria--Correspondence.
Ficker, Ludwig von, 1880-1967. Correspondence.