Columbia subject headings:
Barmer Theologische Erklärung.
Bekennende Kirche--Germany--Rhineland--History.
Church and state--Germany--Rhineland--History--20th century.
Rhineland (Germany)--Church history--20th century.
Harvard subject headings:
Barmen (Wuppertal, Germany)--Church history.
Barmer Theologische Erklärung.
Bekennende Kirche--History.
Church and state--Germany--History--1933-1945
National socialism.
Rhineland (Germany)--Church history.
Princeton subject headings: