Columbia subject headings:
Essex (England)--Antiquities.
Essex (England)--Historical geography.
Essex (England)--History.
Excavations (Archaeology)--England--Essex.
Harvard subject headings:
Essex (England)--Antiquities.
Essex (England)--Historical geography.
Essex (England)--History.
Excavations (Archaeology)--England--Essex.
Princeton subject headings:
Essex (England)--Antiquities.
Essex (England)--Historical geography.
Essex (England)--History.
Excavations (Archaeology)--England--Essex.