Columbia subject headings:
Harvard subject headings:
Labor unions--Political activity--Poland
NSZZ "Solidarność" (Labor organization)
Poland--Politics and government--1980-1989
Working class--Poland--Political activity.
Princeton subject headings:
Labor unions--Political activity--Poland.
NSZZ "Solidarność" (Labor organization)
Poland--Politics and government--1980-1989.
Working class--Political activity--Poland.