Columbia subject headings:
Europe--History--1517-1648.
Europe--Politics and government.
Turkey--Foreign relations.
Harvard subject headings:
Europe--History--1517-1648.
Europe--Politics and government.
Germany--History--1517-1648.
Protestantism.
Turkey--Foreign relations.
Turkey--History--Ottoman Empire, 1288-1918.
Princeton subject headings:
Europe--History--1517-1648.
Europe--Politics and government.
Turkey--Foreign relations.