Columbia subject headings:
Balkan Peninsula--History.
Eastern question (Balkan)
Turkey--History.
World War, 1914-1918--Turkey.
Harvard subject headings:
Balkan Peninsula--History.
Eastern question (Balkan)
Turkey--History.
World War, 1914-1918--Turkey
Princeton subject headings:
Balkan Peninsula--History.
Eastern question (Balkan)
Turkey--History.
World War, 1914-1918--Turkey.