Columbia subject headings:
Greece--History--Constantine I, 1913-1917--Sources.
Greece--History--Constantine I, 1913-1917.
Greece--Politics and government--1913-1917.
Harvard subject headings:
Greece--History--Constantine I, 1913-1917--Sources.
Greece--History--Constantine I, 1913-1917.
Greece--Politics and government--1913-1917.
Princeton subject headings:
Greece--History--Constantine I, 1913-1917.