Columbia subject headings:
Museo teatrale alla Scala--Catalogs.
Musical instruments--Catalogs and collections--Italy--Milan.
Musical instruments--Italy--Maintenance and repair.
Harvard subject headings:
Museo teatrale alla Scala--Catalogs.
Musical instruments--Catalogs and collections--Italy--Milan.
Musical instruments--Italy--Maintenance and repair.
Princeton subject headings:
Musical instruments--Catalogs and collections--Italy--Milan.