Columbia subject headings:
Harvard subject headings:
Dudley (England)--Politics and government.
Labor movement--England--Dudley--History.
Working class--England--Dudley--History--18th century.
Working class--England--Dudley--History--19th century.
Princeton subject headings:
Dudley (England)--Politics and government.
Labor movement--England--Dudley--History.
Working class--England--Dudley--History--18th century.
Working class--England--Dudley--History--19th century.