Columbia subject headings:
Frederika, Queen, consort of Paul I, King of the Hellenes, 1917-1981.
Greece--History--20th century.
Greece--Politics and government--1935-1967.
Marshall, George C. (George Catlett), 1880-1959.
Queens--Greece--Biography.
Harvard subject headings:
Frederika, Queen, consort of Paul I, King of the Hellenes, 1917-1981.
Greece--History--20th century.
Queens--Greece--Biography.
Princeton subject headings:
Frederika, Queen, consort of Paul I, King of the Hellenes, 1917-1981.
Greece--History--20th century.
Queens--Greece--Biography.