Columbia subject headings:
Germany--History--1618-1648.
Peace of Westphalia
Thirty Years' War, 1618-1648.
Harvard subject headings:
Germany--History--1618-1648.
Peace of Westphalia
Thirty Years' War, 1618-1648.
Princeton subject headings:
Germany--History--1618-1648.
Peace of Westphalia
Thirty Years' War, 1618-1648.