Columbia subject headings:
European Union countries--Economic integration.
European Union countries--Foreign relations--Great Britain.
European Union--Great Britain.
European Union--Membership.
Great Britain--Foreign relations--European Union countries.
Harvard subject headings:
European Union countries--Economic integration
European Union countries--Foreign relations--Great Britain.
European Union--Great Britain.
European Union--Membership.
Great Britain--Foreign relations--European Union countries.
Princeton subject headings:
European Union countries--Economic integration.
European Union countries--Foreign relations--Great Britain.
European Union--Great Britain.
European Union--Membership.
Great Britain--Foreign relations--European Union countries.