Columbia subject headings:
Strepponi, Giuseppina--Political and social views--Congresses.
Verdi, Giuseppe, 1813-1901--Political and social views--Congresses.
Harvard subject headings:
Strepponi, Giuseppina--Political and social views--Congresses.
Verdi, Giuseppe, 1813-1901--Criticism and interpretation--Congresses.
Verdi, Giuseppe, 1813-1901--Political and social views--Congresses.
Verdi, Giuseppe, 1813-1901. Macbeth. Ah, la paterna mano
Princeton subject headings:
Strepponi, Giuseppina--Political and social views--Congresses.
Verdi, Giuseppe, 1813-1901--Political and social views--Congresses.