Columbia subject headings:
Civilization, Classical--Congresses.
Civilization, Modern--Ancient influences--Congresses.
Classical literature--Congresses.
Harvard subject headings:
Civilization, Classical--Congresses
Civilization, Modern--Ancient influences--Congresses.
Classical antiquities--Congresses.
Classical literature--Congresses.
World history--Congresses.
World politics--Congresses
Princeton subject headings:
Civilization, Classical--Congresses.
Civilization, Modern--Ancient influences--Congresses.
Classical literature--Congresses.