Columbia subject headings:
Harvard subject headings:
Labor unions--Poland
NSZZ "Solidarność" (Labor organization)
Poland--Politics and government--1945-1980
Social movements--Poland--History--Sources.
Social movements--Poland.
Princeton subject headings:
Komitet Samoobrony Społecznej KOR.
NSZZ "Solidarność" (Labor organization)
Social movements--Poland.
Working class--Political activity--Poland.