Columbia subject headings:
Antiquities, Prehistoric--England--Plymouth.
Excavations (Archaeology)--England--Plymouth.
Harbors--England--Plymouth.
Plymouth (England)--Antiquities.
Romans--England--Plymouth.
Harvard subject headings:
Batten, Mount (England)--Antiquities.
Excavations (Archaeology)--England--Batten, Mount.
Plymouth (England)--Antiquities.
Princeton subject headings:
Excavations (Archaeology)--England--Mount Batten.
Mount Batten (England)--Antiquities.