Columbia subject headings:
Breiddin Hillfort Site (Wales)
Bronze age--Wales.
Excavations (Archaeology)--Welsh Borders (England and Wales)
Iron age--Wales.
Welsh Borders (England and Wales)--Antiquities.
Harvard subject headings:
Breiddin Hillfort Site (Wales)
Excavations (Archaeology)--Wales--Borders of Wales.
Welsh Borders (England and Wales)--Antiquities.
Princeton subject headings: