Columbia subject headings:
Harvard subject headings:
Holy Roman Empire--Foreign relations--Turkey.
Holy Roman Empire--History--1517-1648
Holy Roman Empire--History--1648-1804
Turkey--Foreign relations--Holy Roman Empire.
Turkey--History--Ottoman Empire, 1288-1918
Turkey--History--Ottoman Empire, 1288-1918--Sources.
Princeton subject headings:
Holy Roman Empire--Foreign relations--Turkey.
Holy Roman Empire--History--1517-1648.
Holy Roman Empire--History--1648-1804.
Turkey--Foreign relations--Holy Roman Empire.
Turkey--History--Ottoman Empire, 1288-1918.