Columbia subject headings:
Harvard subject headings:
Central labor councils--Congresses.
Labor disputes--Congresses.
Labor disputes--Europe.
Labor union members--Europe.
Labor unions--Government policy--Europe.
Service industries workers--Labor unions--Europe.
Vereinte Dienstleistungsgewerkschaft.
Princeton subject headings:
Labor disputes--Europe--Congresses.
Labor union members--Europe--Congresses.
Labor unions--Government policy--Europe--Congresses.
Service industries workers--Labor unions--Europe--Congresses.
Vereinte Dienstleistungsgewerkschaft.