Columbia subject headings:
Apollo (Deity)--Cult--Greece--Delphi (Extinct city)
Dialogues, Greek--Translations into Italian.
Harvard subject headings:
Apollo (Deity)--Cult--Greece--Delphi (Extinct city)--Early works to 1800.
Dialogues, Greek--Translations into Italian.
Princeton subject headings:
Numerology--Greece--Delphoi.
Symbolism of numbers.