Columbia subject headings:
Fascism--Italy--History.
Mathematics--Italy--History--20th century.
Mathematics--Political aspects--Italy--History--20th century.
Harvard subject headings:
Fascism--Italy--History
Mathematics--Italy--History--20th century.
Mathematics--Political aspects--Italy--History--20th century.
Princeton subject headings:
Fascism--Italy--History.
Mathematics--Italy--History--20th century.
Mathematics--Political aspects--Italy--History--20th century.