Columbia subject headings:
Greece--History--Persian Wars, 500-449 B.C.
Marathon, Battle of, Greece, 490 B.C.
Harvard subject headings:
Greece--History--Persian Wars, 500 B.C.-449 B.C.
Marathon, Battle of, Greece, 490 B.C.
Princeton subject headings:
Greece--History--Persian Wars, 500-449 B.C.
Marathon, Battle of, Greece, 490 B.C.