Columbia subject headings:
NSZZ "Solidarność" (Labor organization)
Strikes and lockouts--Poland.
Working class--Political activity--Poland.
Harvard subject headings:
Labor unions--Political activity--Poland
NSZZ "Solidarność" (Labor organization)
Poland--Politics and government--1980-1989
Wałęsa, Lech, 1943-.
Princeton subject headings:
Labor unions--Political activity--Poland.
NSZZ "Solidarność" (Labor organization)--History.
Poland--Politics and government--1980-1989.