Columbia subject headings:
Europe--Economic policy--Congresses.
Europe--Politics and government--Congresses.
Europe--Social policy--Congresses.
Harvard subject headings:
Europe--Economic policy--Congresses.
Europe--Politics and government--Congresses.
Europe--Social policy--Congresses.
Princeton subject headings:
Europe--Economic policy--Congresses.
Europe--Politics and government--Congresses.
Europe--Social policy--Congresses.