Columbia subject headings:
Mascagni, Pietro, 1863-1945. Zanetto.
Opera--Italy--19th century.
Verismo (Opera)--Italy.
Harvard subject headings:
Mascagni, Pietro, 1863-1945. Zanetto.
Opera--Italy--19th century
Verismo (Opera)--Italy.
Princeton subject headings:
Mascagni, Pietro, 1863-1945. Zanetto.
Opera--Italy--19th century.
Verismo (Opera)--Italy.