Columbia subject headings:
Foreign trade regulation--European Union countries.
Foreign trade regulation.
Protectionism--European Union countries.
Protectionism.
Harvard subject headings:
Europe--Economic integration.
European Union
Foreign trade regulation--European Union countries.
Foreign trade regulation.
International economic integration.
International trade agencies.
Tariff--Law and legislation--European Union countries.
Tariff--Law and legislation.
World Trade Organization
Princeton subject headings: