Columbia subject headings:
Catholic Church--Germany (West)--History--20th century--Sources.
Church and social problems--Germany (West)--History--20th century--Sources.
Germany (West)--Church history--Sources.
Harvard subject headings:
Catholic Church--Germany (West)--History--20th century--Sources.
Church and social problems--Germany (West)--History--20th century--Sources.
Germany (West)--Church history--Sources.
Princeton subject headings:
Catholic Church--Germany (West)--History--20th century--Sources.
Church and social problems--Germany (West)--History--20th century--Sources.
Germany (West)--Church history--Sources.