Columbia subject headings:
Harvard subject headings:
Marcus Aurelius, Emperor of Rome, 121-180--Congresses.
Marcus Aurelius, Emperor of Rome, 121-180--Ethics--Congresses.
Marcus Aurelius, Emperor of Rome, 121-180. Meditations--Congresses.
Philosophy, Ancient--Congresses.
Princeton subject headings:
Emperors--Rome--Biography--Congresses.
Marcus Aurelius, Emperor of Rome, 121-180--Congresses.
Philosophers--Biography--Congresses.
Rome--History--Marcus Aurelius, 161-180--Congresses.