Columbia subject headings:
Harvard subject headings:
European Union countries--Foreign economic relations--Switzerland.
European Union countries--Foreign relations--21st century.
European Union countries--Foreign relations--Switzerland.
Switzerland--Foreign economic relations--European Union countries.
Switzerland--Foreign relations--European Union countries.
Princeton subject headings:
European Union countries--Foreign economic relations--Switzerland.
European Union countries--Foreign relations--21st century.
European Union countries--Foreign relations--Switzerland.
Switzerland--Foreign economic relations--European Union countries.
Switzerland--Foreign relations--European Union countries.