Columbia subject headings:
Caruso, Enrico, 1873-1921--Songs and music.
Dalla, Lucio. Caruso.
Popular music--Italy--History and criticism.
Harvard subject headings:
Caruso, Enrico, 1873-1921--Songs and music.
Dalla, Lucio. Caruso.
Popular music--Italy--History and criticism
Princeton subject headings:
Caruso, Enrico, 1873-1921--Songs and music.
Dalla, Lucio. Caruso.
Popular music--Italy--History and criticism.