Columbia subject headings:
Archaeology--Europe.
Civilization, Celtic--Europe.
Europe--Antiquities.
Excavations (Archaeology)--Europe.
Frey, Otto-Herman--Bibliography.
Harvard subject headings:
Antiquities, Prehistoric
Antiquities, Prehistoric--Europe
Europe--Antiquities.
Excavations (Archaeology)
Excavations (Archaeology)--Europe
Princeton subject headings:
Archaeology--Europe.
Civilization, Celtic--Europe.
Europe--Antiquities.
Excavations (Archaeology)--Europe.
Frey, Otto-Herman--Bibliography.