Columbia subject headings:
Conservatorio di musica "S. Pietro a Majella" di Napoli. Biblioteca--Catalogs.
Opera--Italy--17th century--Bibliography--Catalogs.
Opera--Italy--18th century--Bibliography--Catalogs.
Operas--17th century--Librettos--Bibliography--Catalogs.
Operas--18th century--Librettos--Bibliography--Catalogs.
Harvard subject headings:
Conservatorio di musica "S. Pietro a Majella" di Napoli. Biblioteca--Catalogs.
Opera--Italy--17th century--Bibliography--Catalogs.
Opera--Italy--18th century--Bibliography--Catalogs.
Operas--17th century--Librettos--Bibliography--Catalogs.
Operas--18th century--Librettos--Bibliography--Catalogs.
Princeton subject headings: