Columbia subject headings:
Thirty Years' War, 1618-1648--Diplomatic history.
Thirty Years' War, 1618-1648--Peace.
Volmar, Isaak, 1582-1662--Diaries.
Harvard subject headings:
Peace of Westphalia
Peace of Westphalia--Sources.
Thirty Years' War, 1618-1648--Diplomatic history.
Thirty Years' War, 1618-1648--Peace.
Volmar, Isaak, 1582-1662--Diaries.
Princeton subject headings: