Columbia subject headings:
Harvard subject headings:
Era River Valley (Italy)--History--Congresses.
Excavations (Archaeology)--Italy--Era River Valley--Congresses.
Excavations (Archaeology)--Italy--Peccioli--Congresses.
Peccioli (Italy)--History--Congresses.
Princeton subject headings:
Archaeology, Medieval--Italy--Era River Valley--Congresses.
Archaeology, Medieval--Italy--Peccioli--Congresses.
Era River Valley (Italy)--History.
Excavations (Archaeology)--Italy--Era River Valley--Congresses.
Excavations (Archaeology)--Italy--Peccioli--Congresses.
Peccioli (Italy)--History.