Columbia subject headings:
Catholic Church--Germany--Westphalia--History--16th century.
Catholic Church--Germany--Westphalia--History--17th century.
Westphalia (Germany)--Church history.
Harvard subject headings:
Catholic Church--Germany--Westphalia--History--16th century.
Catholic Church--Germany--Westphalia--History--17th century.
Westphalia (Germany)--Church history.
Princeton subject headings:
Catholic Church--Germany (West)--Westphalia--History.
Catholic Church--Relations--Protestant churches--History.
Counter-Reformation.
Westphalia (Germany)--Church history.