Columbia subject headings:
Germany--History--Revolution, 1848-1849.
Germany--Social conditions.
Working class--Germany--History--19th century.
Harvard subject headings:
Germany--History--Revolution, 1848-1849.
Germany--Social conditions.
Working class--Germany--History--19th century
Princeton subject headings:
Artisans--Germany--History--19th century.
Germany--Economic conditions--19th century.
Germany--History--Revolution, 1848-1849.
Labor--Germany--History--19th century.