Columbia subject headings:
Harvard subject headings:
Constantinople (Ecumenical patriarchate)--History.
Constantinople (Ecumenical patriarchate)--Politics and government.
Turkey--History--Ottoman Empire, 1288-1918.
Turkey--Politics and government.
Princeton subject headings:
Constantinople (Ecumenical patriarchate)--History.
Constantinople (Ecumenical patriarchate)--Politics and government.
Turkey--History--Ottoman Empire, 1288-1918.
Turkey--Politics and government.