Columbia subject headings:
Librettos--Analysis, appreciation.
Opera--Political aspects.
Verdi, Giuseppe, 1813-1901--Librettos.
Verdi, Giuseppe, 1813-1901. Nabucco.
Harvard subject headings:
Librettos--Analysis, appreciation.
Opera--Political aspects.
Verdi, Giuseppe, 1813-1901--Librettos.
Verdi, Giuseppe, 1813-1901. Nabucco
Princeton subject headings:
Dramatic music--History and criticism.
Opera--Italy.
Verdi, Giuseppe, 1813-1901. Nabucco.