Columbia subject headings:
Braunschweig (Germany)--Social conditions.
Industries--Germany--Braunschweig--History.
Working class--Germany--Braunschweig--History.
Harvard subject headings:
Agricultural laborers--Germany--Braunschweig (State)--History--19th century.
Artisans--Germany--Braunschweig (State)--History--19th century.
Industrialization.
Working class--Germany--Braunschweig (State)--History--19th century.
Princeton subject headings:
Braunschweig (Germany)--Social conditions.
Industries--Germany--Braunschweig--History.
Working class--Germany--Braunschweig--History.