Columbia subject headings:
Harvard subject headings:
Martial law--Poland--History--Sources.
NSZZ "Solidarność" (Labor organization)--Finance.
NSZZ "Solidarność" (Labor organization)--Poland--Wrocław--History--Sources.
Princeton subject headings:
Government, Resistance to--Poland.
NSZZ "Solidarność" (Labor organization). Region Dolny Śląsk--Finance.
Silesia, Lower (Poland and Germany)--History--20th century.