Columbia subject headings:
Harvard subject headings:
Catholic Church--Europe, German-speaking--History--Congresses.
Church and state--Germany--Congresses.
Church and state--Italy--Congresses
Fascism and the Catholic Church--Europe, German-speaking--Congresses.
Fascism and the Catholic Church--Italy--Congresses.
Princeton subject headings:
Church and state--Germany--Congresses.
Church and state--Italy--Congresses.
Fascism and the Catholic Church--Italy--Congresses.