Columbia subject headings:
Church and state--Germany--History--20th century.
Germany--Church history--20th century.
Germany--History--Revolution, 1918.
Harvard subject headings:
Church and state--Germany--History--20th century
Germany--Church history--20th century.
Germany--History--Revolution, 1918.
Princeton subject headings:
Church and state--Germany--History--20th century.
Germany--Church history--20th century.
Germany--History--Revolution, 1918.