Columbia subject headings:
Deutschnationale Volkspartei--History--20th century.
Working class--Political activity--Germany--History--20th century.
Harvard subject headings:
Deutschnationale Volkspartei--History--20th century.
Deutschnationale Volkspartei--History.
Working class--Germany--Political activity--History--20th century.
Working class--Political activity--Germany--History--20th century.
Princeton subject headings:
Deutschnationale Volkspartei--History--20th century.
Working class--Germany--Political activity--History--20th century.