Columbia subject headings:
Harvard subject headings:
Europe--Description and travel.
Pirelli, Giovanni Battista, 1848-1932--Travel--Europe.
Pirelli, società per azioni--History.
Rubber industry and trade--Italy--History.
Princeton subject headings:
Pirelli, Giovanni Battista, 1848-1932.
Pirelli, società per azioni--History.
Tire industry--Italy--History.