Columbia subject headings:
Harvard subject headings:
East-West trade--Congresses.
Europe, Eastern--Foreign relations--European Union countries--Congresses.
European Union countries--Foreign relations--Europe, Eastern--Congresses.
International economic relations--Congresses
Princeton subject headings:
Borderlands--European Union--Congresses.
Europe, Eastern--Ethnic relations--Congresses.
Moldova--Congresses.
Romania--Congresses.