Columbia subject headings:
Delphi (Extinct city)--Congresses.
Excavations (Archaeology)--Greece--Delphi (Extinct city)--Congresses.
Harvard subject headings:
Delphi (Extinct city)--Congresses.
Excavations (Archaeology)--Greece--Delphi (Extinct city)
Excavations (Archaeology)--Greece--Delphi (Extinct city)--Congresses.
Princeton subject headings:
Delphi (Extinct city)--Congresses.
Excavations (Archaeology)--Greece--Delphi (Extinct city)--Congresses.