Columbia subject headings:
Music--Austria--Vienna--20th century--History and criticism.
Music--Italy--Trieste--20th century--History and criticism.
Harvard subject headings:
Music--Austria--Vienna--20th century--History and criticism.
Music--Italy--Trieste--20th century--History and criticism.
Princeton subject headings:
Music--Austria--Vienna--20th century--History and criticism.
Music--Italy--Trieste--20th century--History and criticism.