Columbia subject headings:
Harvard subject headings:
Musical theater--Italy--Cagliari--History.
Opera--Italy--Cagliari.
Teatro civico di Cagliari.
Princeton subject headings:
Music-halls--Italy--Cagliari--History.
Opera--Italy--Cagliari--History.
Teatro Civico di Cagliari--History.
Theaters--Italy--Cagliari--History.