Columbia subject headings:
Germany--Economic conditions--1888-1918.
Germany--Economic conditions--19th century.
Germany--Social conditions.
Industrialization--Germany--History.
Harvard subject headings:
Germany--Economic conditions--1888-1918
Germany--Economic conditions--19th century
Germany--Social conditions
Industrialization--Germany--History.
Princeton subject headings:
Germany--Economic conditions.
Germany--Social conditions.
Industries--Germany--History.