Columbia subject headings:
Harvard subject headings:
Collective bargaining--Congresses.
Collective bargaining--Europe--Congresses.
Collective labor agreements--Congresses.
Collective labor agreements--Europe--Congresses.
Europe--Economic integration--Congresses.
Sex discrimination in employment--Law and legislation--Congresses.
Sex discrimination in employment--Law and legislation--Europe--Congresses.
Princeton subject headings:
Collective labor agreements--Congresses.
Collective labor agreements--Europe--Congresses.
Sex discrimination against women--Congresses.
Sex discrimination against women--Europe--Congresses.
Social security--Europe--Congresses.