Columbia subject headings:
Music--Italy--Milan--20th century--History and criticism.
Orchestra--Italy--Milan--History--20th century.
Teatro alla Scala--History--20th century.
Teatro alla Scala. Orchestra--History--20th century.
Toscanini, Arturo, 1867-1957.
Harvard subject headings:
Music--Italy--Milan--20th century--History and criticism.
Orchestra--Italy--Milan--History--20th century.
Teatro alla Scala--History--20th century.
Teatro alla Scala. Orchestra--History--20th century.
Toscanini, Arturo, 1867-1957
Princeton subject headings:
Music--Italy--Milan--20th century--History and criticism.
Orchestra--Italy--Milan--History--20th century.
Teatro alla Scala--History--20th century.
Teatro alla Scala. Orchestra--History--20th century.
Toscanini, Arturo, 1867-1957.