Columbia subject headings:
Harvard subject headings:
Germany--Economic conditions--19th century.
Germany--Politics and government--1789-1900
Joos, Wilhelm, 1821-1900.
Politicians--Germany--Biography
Princeton subject headings:
Germany--Economic conditions--19th century.
Germany--Politics and government--1789-1900.
Joos, Wilhelm, 1821-1900.
Politicians--Germany--Biography.