Columbia subject headings:
Bergamo (Italy)--Economic conditions.
Bergamo (Italy)--History.
Bergamo (Italy)--Social conditions.
Lombards--Italy--Bergamo--History.
Harvard subject headings:
Bergamo (Italy)--Economic conditions.
Bergamo (Italy)--History.
Bergamo (Italy)--Social conditions.
Lombards--Italy--Bergamo--History.
Princeton subject headings:
Bergamo (Italy)--Economic conditions.
Bergamo (Italy)--History.
Bergamo (Italy)--Social conditions.
Lombards--Italy--Bergamo--History.