Columbia subject headings:
Harvard subject headings:
Ernst August, Duke of Brunswick-Lüneburg, 1887-1953--Marriage--Congresses.
Europe--History--20th century--Congresses.
Marriages of royalty and nobility--Germany--Braunschweig (State)--History--20th century--Congresses.
Viktoria Luise, Herzogin zu Braunschweig und Lüneburg, 1892-1980--Marriage--Congresses.
Princeton subject headings:
Ernst August, Duke of Brunswick-Lüneburg, 1887-1953--Marriage--Congresses.
Europe--History--20th century--Congresses.
Marriages of royalty and nobility--Germany--Braunschweig (State)--History--20th century--Congresses.
Viktoria Luise, Herzogin zu Braunschweig und Lüneburg, 1892-1980--Marriage--Congresses.