Columbia subject headings:
Excavations (Archaeology)--Spain--Congresses.
Professional associations--Rome--Congresses.
Public buildings--Rome--Congresses.
Public buildings--Spain--History--Congresses.
Harvard subject headings:
Excavations (Archaeology)--Spain--Congresses
Professional associations--Rome--Congresses.
Public buildings--Rome--Congresses.
Public buildings--Spain--History--Congresses.
Princeton subject headings:
Excavations (Archaeology)--Spain--Congresses.
Professional associations--Rome--Congresses.
Public buildings--Rome--Congresses.
Public buildings--Spain--History--Congresses.