Columbia subject headings:
Turkey--Foreign relations--1918-1960.
Turkey--History--20th century.
Turkey--History--Ottoman Empire, 1288-1918.
Harvard subject headings:
Turkey--History--1918-1960.
Turkey--History--1960-
Turkey--History--Ottoman Empire, 1288-1918.
Princeton subject headings:
Turkey--Foreign relations--20th century.
Turkey--History--20th century.
Turkey--History--Ottoman Empire, 1288-1918.