Columbia subject headings:
Opera--Dramaturgy.
Rossini, Gioacchino, 1792-1868--Dramaturgy.
Rossini, Gioacchino, 1792-1868. Operas.
Harvard subject headings:
Opera--Italy--19th century
Rossini, Gioacchino, 1792-1868. Operas.
Princeton subject headings:
Opera--Italy--19th century--History and criticism.
Rossini, Gioacchino, 1792-1868--Criticism and interpretation.