Columbia subject headings:
Léopold III, King of the Belgians, 1901-1983.
World War, 1939-1945--Belgium.
Harvard subject headings:
Léopold III, King of the Belgians, 1901-
World War, 1939-1945--Belgium.
Princeton subject headings:
Léopold III, King of the Belgians, 1901-1983.
World War, 1914-1918--Belgium.