Columbia subject headings:
Nievo, Ippolito, 1831-1861--Congresses.
Harvard subject headings:
Nievo, Ippolito, 1831-1861--Congresses.
Nievo, Ippolito, 1831-1861--Homes and haunts--Italy--Mantua--Congresses.
Princeton subject headings:
Nievo, Ippolito, 1831-1861--Congresses.