Columbia subject headings:
Economic development--Europe--History.
Europe--Economic conditions.
Europe--Politics and government.
European cooperation.
Social problems--Europe.
Harvard subject headings:
Economic development--Europe--History--Congresses.
Europe--Economic conditions--Congresses.
Europe--Economic integration--Congresses.
Europe--Politics and government--Congresses.
European cooperation--Congresses.
Social problems--Europe--Congresses.
Princeton subject headings:
Economic development--Europe--History--Congresses.
Europe--Economic conditions--Congresses.
Europe--Economic integration--Congresses.
Europe--Politics and government--Congresses.
European cooperation--Congresses.
Social problems--Europe--Congresses.