Columbia subject headings:
Creeds--19th century--History and criticism--Congresses.
Creeds--20th century--History and criticism--Congresses.
Germany--Church history--19th century--Congresses.
Germany--Church history--20th century--Congresses.
Theology, Doctrinal--Germany--History--19th century--Congresses.
Theology, Doctrinal--Germany--History--20th century--Congresses.
Harvard subject headings:
Creeds--History--19th century--Congresses.
Creeds--History--20th century--Congresses.
Germany--Church history--19th century--Congresses.
Germany--Church history--20th century--Congresses.
Theology, Doctrinal--Germany--History--19th century--Congresses.
Theology, Doctrinal--Germany--History--20th century--Congresses.
Princeton subject headings:
Catholic Church--History--19th century.
Catholic Church--History--20th century.
Germany--Church history--19th century.
Germany--Church history--20th century.