Columbia subject headings:
Bo, Carlo, 1911-2001--Congresses.
Philologists--Italy--Biography--Congresses.
Harvard subject headings:
Bo, Carlo, 1911-2001--Congresses.
Philologists--Italy--Biography--Congresses.
Princeton subject headings:
Bo, Carlo, 1911-2001--Congresses.
Philologists--Italy--Congresses.