Columbia subject headings:
Celts--Cross-cultural studies.
Celts--Public opinion.
Celts.
Public opinion--Greece.
Public opinion--Rome.
Harvard subject headings:
Celts--Public opinion.
Celts.
Public opinion--Greece.
Public opinion--Rome.
Princeton subject headings:
Celts--Public opinion.
Celts.
Public opinion--Greece.
Public opinion--Rome.