Columbia subject headings:
Harvard subject headings:
Greece--History--1917-1944.
Greece--History--Constantine I, 1913-1917.
Greece--History--George I, 1863-1913.
Greece--History.
Princeton subject headings:
Greece--History--1917-1944.
Greece--History--Constantine I, 1913-1917.
Greece--History--George I, 1863-1913.