Columbia subject headings:
Balkan Peninsula--History.
Byzantine Empire--History--1081-1453.
Byzantine Empire--Relations--Turkey.
Turkey--History--Ottoman Empire, 1288-1918.
Turkey--Relations--Byzantine Empire.
Harvard subject headings:
Balkan Peninsula--History.
Byzantine Empire--History--1081-1453.
Byzantine Empire--Relations--Turkey.
Turkey--History--Ottoman Empire, 1288-1918.
Turkey--Relations--Byzantine Empire.
Princeton subject headings:
Balkan Peninsula--History.
Byzantine Empire--History--1081-1453.
Byzantine Empire--Relations--Turkey.
Turkey--History--Ottoman Empire, 1288-1918.
Turkey--Relations--Byzantine Empire.