Columbia subject headings:
Harvard subject headings:
Germany--History--1618-1648.
Germany--Politics and government--1517-1648.
Holy Roman Empire--History--1517-1648.
Thirty Years' War, 1618-1648
Thirty Years' War, 1618-1648--Finance.
Princeton subject headings:
Germany--History--1618-1648.
Germany--Politics and government--1517-1648.
Holy Roman Empire--History--1517-1648.
Thirty Years' War, 1618-1648--Finance.
Thirty Years' War, 1618-1648.