Columbia subject headings:
Harvard subject headings:
Greece--History--281-146 B.C.--Congresses.
Greece--History--Macedonian Hegemony, 323-281 B.C.--Congresses.
Hellenism--Congresses
Ocean travel in literature--Congresses.
Ocean travel--History--Congresses.
Rome--History--Empire, 30 B.C.-284 A.D.--Congresses.
Sea in literature--Congresses.
Travel, Ancient--Congresses.
Princeton subject headings:
Greece--History--281-146 B.C.--Congresses.
Greece--History--Macedonian Hegemony, 323-281 B.C.--Congresses.
Hellenism--Congresses.
Ocean travel in literature--Congresses.
Ocean travel--History--Congresses.
Rome--History--Empire, 30 B.C.-284 A.D.--Congresses.
Sea in literature--Congresses.
Travel, Ancient--Congresses.