Columbia subject headings:
Harvard subject headings:
Europe, Central--Economic integration.
Europe, Central--Economic policy.
Europe, Central--Foreign relations--European Union countries.
Europe, Eastern--Economic integration.
Europe, Eastern--Economic policy.
Europe, Eastern--Foreign relations--European Union countries.
European Union countries--Foreign relations--Europe, Central.
European Union countries--Foreign relations--Europe, Eastern.
European Union--Europe, Central.
European Union--Europe, Eastern.
Princeton subject headings:
Europe, Central--Economic integration.
Europe, Central--Economic policy.
Europe, Central--Foreign relations--European Union countries.
Europe, Eastern--Economic integration.
Europe, Eastern--Economic policy.
Europe, Eastern--Foreign relations--European Union countries.
European Union countries--Foreign relations--Europe, Central.
European Union countries--Foreign relations--Europe, Eastern.
European Union--Europe, Central.
European Union--Europe, Eastern.