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