Columbia subject headings:
Harvard subject headings:
Europe--Antiquities--History--To 1500.
Excavations (Archaeology)--Europe
Lead--Europe--History--To 1500.
Lead--Europe--Metallurgy--History--To 1500.
Leadwork--Europe--History--To 1500.
Princeton subject headings:
Excavations (Archaeology)
Lead industry and trade--History.
Lead--Metallurgy--History.