Columbia subject headings:
Catholic Church--Germany--History--19th century.
Catholic Church--Germany--History--20th century.
Church and state--Germany--History--19th century.
Church and state--Germany--History--20th century.
Germany--Politics and government--1871-1918.
Harvard subject headings:
Catholic Church--Germany--History--19th century.
Catholic Church--Germany--History--20th century.
Church and state--Germany--History--19th century
Church and state--Germany--History--20th century
Germany--Politics and government--1871-1918.
Princeton subject headings:
Catholics--Germany--Political activity--History.
Deutsche Zentrumspartei--History.
Germany--Politics and government--1888-1918.