Columbia subject headings:
Harvard subject headings:
Excavations (Archaeology)--Wales--Flint.
Flint (Wales)--Antiquities, Roman.
Lead mines and mining--Wales--Flint--History.
Romans--Wales--Flint.
Princeton subject headings:
Excavations (Archaeology)--Wales--Flint.
Pentre Farm Site (Flint, Wales)
Romans--Wales--Flint.