Columbia subject headings:
Islam--History.
Turkey--History--1288-1453.
Turkey--History--1453-1683.
World history.
Harvard subject headings:
Islam--History
Turkey--History--1288-1453.
Turkey--History--1453-1683.
World history
Princeton subject headings:
Islam--History.
Turkey--History--1288-1453.
Turkey--History--1453-1683.
World history.