Columbia subject headings:
Archaeology--Great Britain--Congresses.
Great Britain--Antiquities--Congresses.
Great Britain--History--To 1066--Congresses.
Romans--Great Britain--History--Congresses.
Harvard subject headings:
Archaeology--Great Britain--Congresses.
Archaeology--Great Britain.
Great Britain--Antiquities--Congresses.
Great Britain--Antiquities.
Great Britain--History--To 1066--Congresses.
Great Britain--History--To 1066.
Romans--Great Britain--History--Congresses.
Romans--Great Britain--History.
Princeton subject headings:
Archaeology--Great Britain--Congresses.
Great Britain--Antiquities--Congresses.
Great Britain--History--To 1066--Congresses.
Romans--Great Britain--History--Congresses.