Columbia subject headings:
Harvard subject headings:
Bergamo (Italy : Province)--Economic conditions.
Bergamo (Italy : Province)--History.
Bergamo (Italy : Province)--Politics and government.
Partito comunista italiano. Federazione bergamasca.
Princeton subject headings:
Bergamo (Italy : Province)--Politics and government.
Partito comunista italiano. Federazione bergamasca.