Columbia subject headings:
Austria--Foreign relations--Italy.
Austria--Foreign relations--Treaties.
Italy--Foreign relations--Austria.
Italy--Foreign relations--Treaties.
Harvard subject headings:
Austria--Foreign relations--Italy.
Austria--Foreign relations--Treaties.
Italy--Foreign relations--Austria.
Italy--Foreign relations--Treaties.
Princeton subject headings:
Austria--Foreign relations--Italy.
Austria--Foreign relations--Treaties.
Italy--Foreign relations--Austria.
Italy--Foreign relations--Treaties.
Treaties.