Columbia subject headings:
Catholic Church--Foreign relations--Italy.
Church and state--Italy--History--20th century.
Fascism and the Catholic Church--Italy--History--20th century.
Italy--Foreign relations--Catholic Church.
Italy--Politics and government--1922-1945.
Papacy--History--1929-1945.
Harvard subject headings:
Catholic Church--Foreign relations--Italy.
Church and state--Italy--History--20th century
Fascism and the Catholic Church--Italy--History--20th century.
Italy--Politics and government--1922-1945.
Italy--Relations--Catholic Church.
Papacy--History--1929-1945
Princeton subject headings:
Catholic Church--Foreign relations--Italy.
Church and state--Italy--History--20th century.
Fascism and the Catholic Church--Italy--History--20th century.
Italy--Foreign relations--Catholic Church.
Italy--Politics and government--1922-1945.
Papacy--History--1929-1945.