Columbia subject headings:
Harvard subject headings:
Crime--Germany--History--19th century.
Germany--Economic conditions--19th century.
Germany--Social conditions--1871-1918.
Homeless persons--Germany--History--19th century.
Poor--Germany--History--19th century.
Prostitutes--Germany--History--19th century.
Tramps--Germany--History--19th century.
Unemployed--Germany--History--19th century.
Urban poor--Germany--History--19th century.
Working class--Germany--History--19th century
Princeton subject headings:
Crime--Germany--History--19th century.
Germany--Social conditions--1871-1918.
Homeless persons--Germany--History--19th century.
Prostitutes--Germany--History--19th century.
Tramps--Germany--History--19th century.
Unemployed--Germany--History--19th century.
Urban poor--Germany--History--19th century.