Columbia subject headings:
Cities and towns--Germany--History--18th century.
Cities and towns--Germany--History--19th century.
Germany--Social conditions--18th century.
Germany--Social conditions--19th century.
Middle class--Germany--History--18th century.
Middle class--Germany--History--19th century.
Harvard subject headings:
Cities and towns--Germany--History--18th century.
Cities and towns--Germany--History--19th century.
Germany--Social conditions--18th century.
Germany--Social conditions--19th century.
Middle class--Germany--History--18th century.
Middle class--Germany--History--19th century.
Princeton subject headings:
Cities and towns--Germany--History--18th century.
Cities and towns--Germany--History--19th century.
Germany--Social conditions--18th century.
Germany--Social conditions--19th century.
Middle class--Germany--History--18th century.
Middle class--Germany--History--19th century.