Columbia subject headings:
Germany--Church history--19th century.
Germany--Church history--20th century.
Protestant churches--Germany--History--19th century.
Protestant churches--Germany--History--20th century.
Harvard subject headings:
Germany--Church history--19th century.
Germany--Church history--20th century.
Protestant churches--Germany--History--19th century.
Protestant churches--Germany--History--20th century
Princeton subject headings:
Germany--Church history--19th century.
Germany--Church history--20th century.
Protestant churches--Germany--History--19th century.
Protestant churches--Germany--History--20th century.