Columbia subject headings:
Labor unions--Political activity--Poland.
NSZZ "Solidarność" (Labor organization)
Wałęsa, Lech, 1943-
Harvard subject headings:
Labor unions--Poland--Biography.
NSZZ "Solidarność" (Labor organization)
Wałęsa, Lech, 1943-.
Princeton subject headings:
NSZZ "Solidarność" (Labor organization)
Poland--History--20th century.
Wałęsa, Lech, 1943-