Columbia subject headings:
Holy Roman Empire--Foreign relations.
Holy Roman Empire--History--Charles V, 1519-1556.
Turkey--History--Ottoman Empire, 1288-1918.
Turkey--History--Süleyman I, 1520-1566.
Harvard subject headings:
Holy Roman Empire--History--1273-1517.
Holy Roman Empire--History--1517-1648.
Holy Roman Empire--History--1648-1804.
Turkey--History--Ottoman Empire, 1288-1918.
Princeton subject headings:
Holy Roman Empire--History--1273-1517.
Holy Roman Empire--History--1517-1648.
Holy Roman Empire--History--1648-1804.
Turkey--History--Ottoman Empire, 1288-1918.