Columbia subject headings:
Catholic Church--Clergy--Germany--Oldenburg.
National socialism and religion--Germany--Oldenburg.
Oldenburg (Germany)--Church history--20th century.
Harvard subject headings:
Catholic Church--Clergy--Biography.
Catholic Church--Germany--Oldenburg.
National socialism and religion--Germany--Oldenburg.
Oldenburg (Germany)--Church history--20th century.
Princeton subject headings: