Columbia subject headings:
European Union countries--Politics and government--21st century.
European Union--Public opinion.
European federation.
Public opinion--European Union countries.
Harvard subject headings:
European Union countries--Politics and government--21st century.
European Union--Public opinion.
European federation
Public opinion--European Union countries
Princeton subject headings:
European Union countries--Politics and government--21st century.
European Union--Public opinion.
European federation.
Public opinion--European Union countries.