Columbia subject headings:
Harvard subject headings:
Businesspeople--Germany--History--20th century.
Capitalism--Social aspects--Germany--History--20th century.
Germany--Economic conditions--20th century.
Globalization--Germany--History--20th century.
Industrialization--Germany--History--20th century.
Middle class--Germany--20th century.
Middle class--Germany--Social conditions--20th century.
Working class--Germany--Social conditions--20th century.
Princeton subject headings:
Businesspeople--Germany--History--20th century.
Capitalism--Social aspects--Germany--History--20th century.
Globalization--Germany--History--20th century.
Industrialization--Germany--History--20th century.
Middle class--Germany--Social conditions--20th century.
Working class--Germany--Social conditions--20th century.