Columbia subject headings:
Copais Lake (Greece)--Antiquities.
Excavations (Archaeology)--Greece--Copais Lake.
Excavations (Archaeology)--Greece--Gla Site.
Fortification, Prehistoric--Greece.
Gla Site (Greece)
Harvard subject headings:
Copais Lake (Greece)--Antiquities.
Excavations (Archaeology)--Greece--Copais Lake.
Excavations (Archaeology)--Greece--Gla Site.
Fortification, Prehistoric--Greece.
Gla Site (Greece)
Princeton subject headings: