Columbia subject headings:
Balkan Peninsula--Civilization--Congresses.
Balkan Peninsula--Economic conditions--Congresses.
Balkan Peninsula--Social life and customs--Congresses.
Turkey--History--Ottoman Empire, 1288-1918--Administrative and political divisions--Congresses.
Turks--Balkan Peninsula--History--Congresses.
Harvard subject headings:
Balkan Peninsula--Civilization--Congresses.
Balkan Peninsula--Economic conditions--Congresses.
Balkan Peninsula--History--Congresses.
Balkan Peninsula--Social life and customs--Congresses.
Turkey--History--Ottoman Empire, 1288-1918--Administrative and political divisions--Congresses.
Turks--Balkan Peninsula--History--Congresses.
Princeton subject headings:
Balkan Peninsula--Civilization--Congresses.
Balkan Peninsula--Economic conditions--History--Congresses.
Balkan Peninsula--Social life and customs--History--Congresses.
Turkey--History--Ottoman Empire, 1288-1918--Administrative and political divisions--Congresses.
Turks--Balkan Peninsula--History--Congresses.