Columbia subject headings:
Harvard subject headings:
Art--Collectors and collecting--Austria--Biography--Congresses.
Austria--Foreign relations--Middle East--Congresses.
Diplomats--Austria--Biography--Congresses.
Middle East--Foreign relations--Austria--Congresses.
Prokesch von Osten, Anton, Graf, 1795-1876--Congresses.
Princeton subject headings:
Art--Collectors and collecting--Austria--Biography--Congresses.
Austria--Foreign relations--Middle East--Congresses.
Diplomats--Austria--Biography--Congresses.
Middle East--Foreign relations--Austria--Congresses.
Prokesch von Osten, Anton, Graf, 1795-1876--Congresses.