Columbia subject headings:
Harvard subject headings:
Great Britain--History--Roman period, 55 B.C.-449 A.D.
Industrial arts--England--Yorkshire--History--To 1500.
Romans--England--Yorkshire.
Yorkshire (England)--Antiquities, Roman.
Princeton subject headings:
Great Britain--History--Roman period, 55 B.C.-449 A.D.
Industrial arts--England--Yorkshire--History--To 1500.
Romans--Industries--England--Yorkshire.
Yorkshire (England)--Antiquities, Roman.