Columbia subject headings:
Europe--Commercial policy--History--19th century.
Europe--Commercial policy--History--20th century.
Industrial policy--Europe--History--19th century.
Industrial policy--Europe--History--20th century.
Protectionism--Europe--History--19th century.
Protectionism--Europe--History--20th century.
Tariff--Europe--History--19th century.
Tariff--Europe--History--20th century.
Harvard subject headings:
Europe--Commercial policy--History--19th century.
Europe--Commercial policy--History--20th century.
Industrial policy--Europe--History--19th century.
Industrial policy--Europe--History--20th century.
Protectionism--Europe--History--19th century.
Protectionism--Europe--History--20th century.
Tariff--Europe--History--19th century.
Tariff--Europe--History--20th century.
Princeton subject headings:
Europe--Commercial policy--History--19th century.
Europe--Commercial policy--History--20th century.
Industrial policy--Europe--History--19th century.
Industrial policy--Europe--History--20th century.
Protectionism--Europe--History--19th century.
Protectionism--Europe--History--20th century.
Tariff--Europe--History--19th century.
Tariff--Europe--History--20th century.