Columbia subject headings:
Harvard subject headings:
Agriculture--Economic aspects--European Union countries--Congresses.
Europe--Economic integration--20th century--Congresses.
European Union countries--Economic policy--20th century--Congresses.
Monetary policy--European Union countries--Congresses.
News agencies--European Union countries--Congresses.
Telecommunication systems--European Union countries--Congresses.
Princeton subject headings:
Europe--Economic conditions--Congresses.
Europe--Economic integration--Congresses.