Columbia subject headings:
Excavations (Archaeology)--Wales--Gwynedd.
Gwynedd (Wales)--Antiquities.
Harvard subject headings:
Excavations (Archaeology)--Wales--Gwynedd.
Gwynedd (Wales)--Antiquities.
Princeton subject headings:
Excavations (Archaeology)--Wales--Gwynedd.
Gwynedd (Wales)--Antiquities.