Columbia subject headings:
Greece--Colonies--Congresses.
Greece--Emigration and immigration--History--Congresses.
Greeks--Foreign countries--History--Congresses.
Hellenism--History--Congresses.
Harvard subject headings:
Greece--Colonies--Congresses.
Greece--Emigration and immigration--History--Congresses.
Greeks--Foreign countries--History--Congresses.
Hellenism--History--Congresses.
Princeton subject headings:
Greece--Colonies--Congresses.
Greece--Emigration and immigration--History--Congresses.
Greeks--Foreign countries--History--Congresses.
Hellenism--History--Congresses.