Columbia subject headings:
Harvard subject headings:
Philosophy, Ancient--Congresses.
Plato--Criticism and interpretation--Congresses.
Theodōrakopoulos, Iōannēs Nikolaou, 1900-
Princeton subject headings:
Philosophy, Ancient--Congresses.
Plato--Criticism and interpretation--Congresses.
Theodōrakopoulos, Iōannēs Nikolaou, 1900-1981.