Columbia subject headings:
Center parties--Germany--History.
Christian democracy--Germany--History.
Christian socialism--Germany--History.
Germany--Politics and government--1789-1900.
Germany--Politics and government--20th century.
Harvard subject headings:
Christian democracy--Germany--History.
Christian sociology--Germany--History.
Christianity and politics.
Germany--Politics and government--1789-1900
Germany--Politics and government--20th century
Princeton subject headings: