Columbia subject headings:
Organ (Musical instrument)--Construction--Italy--Bergamo (Province)
Organ (Musical instrument)--Italy--Bergamo (Province)
Harvard subject headings:
Organ (Musical instrument)--Construction--Italy--Bergamo (Province)
Organ (Musical instrument)--Italy--Bergamo (Province)
Princeton subject headings:
Organ (Musical instrument)--Construction--Italy--Bergamo (Province).
Organ (Musical instrument)--Italy--Bergamo (Province).