Columbia subject headings:
Architecture--Italy--Bergamo--History--20th century--Guidebooks.
Architecture--Italy--Bergamo--History--21st century--Guidebooks.
Bergamo (Italy)--Buildings, structures, etc.--Guidebooks.
Bergamo (Italy)--Guidebooks.
Harvard subject headings:
Architecture--Italy--Bergamo--History--Guidebooks.
Bergamo (Italy)--Buildings, structures, etc.--Guidebooks.
Bergamo (Italy)--Guidebooks.
Princeton subject headings:
Architecture--Italy--Bergamo--History--20th century--Guidebooks.
Architecture--Italy--Bergamo--History--21st century--Guidebooks.
Bergamo (Italy)--Buildings, structures, etc.--Guidebooks.
Bergamo (Italy)--Guidebooks.