Columbia subject headings:
Azione cattolica italiana--History.
Catholic Action--Italy--Modena--History--20th century.
Catholic Church--Italy--Modena.
Church and social problems--Catholic Church--History--20th century.
Church and social problems--Italy--Modena--History--20th century.
Fascism and the Catholic Church--Italy--Modena.
Modena (Italy)--Church history--20th century.
Harvard subject headings:
Azione cattolica italiana--History--20th century.
Azione cattolica italiana--History.
Catholic Church--Italy--Modena.
Catholic action--Italy--Modena--History--20th century.
Catholics--Italy--Modena--Political activity--History--20th century.
Church and social problems--Catholic Church--History--20th century
Church and social problems--Italy--Modena--History--20th century.
Fascism and the Catholic Church--Italy--Modena--History--20th century.
Fascism and the Catholic Church--Italy--Modena.
Modena (Italy)--Church history--20th century.
Modena (Italy)--Politics and government--20th century.
Princeton subject headings: