Columbia subject headings:
Armenian question.
Eastern question.
Harvard subject headings:
Armenian question.
Eastern question.
Turkey--Ethnic relations--History.
Turkey--History--19th century.
Turkey--History--Ottoman Empire, 1288-1918.
Princeton subject headings:
Turkey--Foreign relations--1878-1909.
Turkey--Foreign relations--1918-1960.
Turkey--History--1878-1909.
Turkey--History--1918-1960.