Columbia subject headings:
Zweig, Stefan, 1881-1942--Congresses.
Zweig, Stefan, 1881-1942--Knowledge--Italy--Congresses.
Harvard subject headings:
Zweig, Stefan, 1881-1942--Congresses.
Zweig, Stefan, 1881-1942--Knowledge--Italy--Congresses.
Princeton subject headings:
Zweig, Stefan, 1881-1942--Congresses.
Zweig, Stefan, 1881-1942--Knowledge--Italy--Congresses.