Columbia subject headings:
Catholic Church--Germany--History--1933-1945--Congresses.
Fascism and the Catholic Church--Italy--Congresses.
Harvard subject headings:
Catholic Church--Germany--History--1933-1945--Congresses.
Fascism and the Catholic Church--Italy--Congresses.
Germany--Church history--1933-1945--Congresses.
National socialism--Religious aspects--Christianity--Congresses.
Princeton subject headings: