Columbia subject headings:
Canisius, Petrus, Saint, 1521-1597.
Jesuits--Germany--History.
Harvard subject headings:
Canisius, Petrus, Saint, 1521-1597.
Germany--Church history--16th century--Sources.
Jesuits--Germany--History--16th century--Sources.
Princeton subject headings:
Canisius, Petrus, Saint, 1521-1597.
Germany--Church history--16th century--Sources.
Jesuits--Germany--History--16th century--Sources.