Columbia subject headings:
Great Britain--History--Anglo-Saxon period, 449-1066.
Ireland--History--To 1172.
Scotland--History--To 1057.
Vikings--England.
Vikings--Ireland.
Vikings--Scotland.
Harvard subject headings:
Great Britain--History--Anglo Saxon period, 449-1066.
Northmen--Great Britain--History.
Vikings
Princeton subject headings:
Great Britain--History--Anglo-Saxon period, 449-1066.
Northmen--Great Britain--History.
Vikings.