Columbia subject headings:
Aerial photography in archaeology.
England--Antiquities, Roman.
Romans--England.
Harvard subject headings:
Aerial photography in archaeology.
England--Antiquities, Roman
Great Britain--Aerial photographs.
Great Britain--Antiquities, Roman--Aerial photographs.
Romans--England
Romans--Great Britain
Princeton subject headings:
Aerial photography in archaeology.
England--Antiquities, Roman.
Romans--England.