Columbia subject headings:
Harvard subject headings:
Artisans--Italy--Brunate--History.
Barometer industry--Italy--Brunate--History.
Barometer industry--Italy--Como, Lake--History.
Princeton subject headings:
Barometers--Italy--Brunate--History--18th century.
Barometers--Italy--Como, Lake--History--18th century.
Volta, Alessandro, 1745-1827.