Columbia subject headings:
Harvard subject headings:
Austria--Foreign relations--Turkey--Congresses.
Austria--History--Congresses.
Austria--Relations--Turkey--Congresses.
Cultural relations--History--Congresses.
Turkey--Foreign relations--Austria--Congresses.
Turkey--History--Ottoman Empire, 1288-1918--Congresses.
Turkey--Relations--Austria--Congresses.
Princeton subject headings:
Austria--History--Congresses.
Austria--Relations--Turkey--Congresses.
Cultural relations--History--Congresses.
Turkey--History--Ottoman Empire, 1288-1918--Congresses.
Turkey--Relations--Austria--Congresses.