Columbia subject headings:
Harvard subject headings:
Balkan Peninsula--History--War of 1912-1913--Influence--Congresses.
Greece--Civilization--20th century--Congresses.
Greece--History--Constantine I, 1913-1917--Congresses.
Greece--History--George I, 1863-1913--Congresses.
Princeton subject headings:
Balkan Peninsula--History--War of 1912-1913--Influence--Congresses.
Greece--Civilization--20th century--Congresses.
Greece--History--Constantine I, 1913-1917--Congresses.
Greece--History--George I, 1863-1913--Congresses.