Columbia subject headings:
Harvard subject headings:
Baldock (England)--Antiquities.
Britons--England--Baldock.
Excavations (Archaeology)--England--Baldock.
Iron age--England--Baldock.
Romans--England--Baldock.
Princeton subject headings:
Baldock (England)--Antiquities, Roman.
England--Antiquities, Roman.
Excavations (Archaeology)--England--Baldock (Hertfordshire).
Romans--England--Baldock (Hertfordshire).