Columbia subject headings:
Harvard subject headings:
Germany--Politics and government--1871-1918
Religion and politics--Germany--History--19th century.
Religion and politics--Germany--History--20th century.
Socialism--Germany--History--19th century
Socialism--Germany--History--20th century
Sozialdemokratische Partei Deutschlands--History--19th century.
Sozialdemokratische Partei Deutschlands--History--20th century.
Princeton subject headings:
Germany--Politics and government--1871-1918.
Religion and politics--Germany--History--19th century.
Religion and politics--Germany--History--20th century.
Socialism--Germany--History--19th century.
Socialism--Germany--History--20th century.
Sozialdemokratische Partei Deutschlands--History--19th century.
Sozialdemokratische Partei Deutschlands--History--20th century.