Columbia subject headings:
Celts--Scotland--Highlands--History.
Civilization, Celtic.
Highlands (Scotland)--Civilization.
Highlands (Scotland)--History.
Harvard subject headings:
Celts--Scotland--Highlands--History.
Civilization, Celtic.
Highlands (Scotland)--Civilization.
Highlands (Scotland)--History.
Princeton subject headings:
Celts--Scotland--Highlands--History.
Civilization, Celtic.
Highlands (Scotland)--Civilization.
Highlands (Scotland)--History.