Columbia subject headings:
Harvard subject headings:
Bahnsen, Berthold, 1913-1971.
Frisians--Germany--Politics and government.
Politicians--Germany--Schleswig-Holstein--Biography.
Princeton subject headings:
Bahnsen, Berthold, 1913-1971.
Frisians--Germany--Politics and government.
Politicians--Germany--Schleswig-Holstein--Biography.