Columbia subject headings:
Economic policy--Congresses.
Management--Employee participation--Europe--Congresses.
Socialism--Europe--Congresses.
Harvard subject headings:
Economic policy--Congresses.
Management--Employee participation--Europe--Congresses.
Socialism--Europe--Congresses
Princeton subject headings:
Economic policy--Congresses.
Europe--Congresses.
Socialism--Europe--Congresses.