Columbia subject headings:
Ariosto, Lodovico, 1474-1533--Appreciation.
Ariosto, Lodovico, 1474-1533. Orlando furioso.
Libretto.
Music and literature.
Opera--Italy--17th century.
Opera--Italy--18th century.
Harvard subject headings:
Ariosto, Lodovico, 1474-1533--Appreciation.
Ariosto, Lodovico, 1474-1533. Orlando furioso.
Libretto.
Music and literature.
Opera--Italy--17th century.
Opera--Italy--18th century
Princeton subject headings:
Ariosto, Lodovico, 1474-1533--Appreciation.
Ariosto, Lodovico, 1474-1533. Orlando furioso.
Libretto.
Music and literature.
Opera--Italy--17th century.
Opera--Italy--18th century.