Columbia subject headings:
Architecture--Italy--Cornia River Valley.
Architecture--Italy--Piombino.
City planning--Italy--Cornia River Valley.
City planning--Italy--Piombino.
Cornia River Valley (Italy)--Maps.
Maps.
Piombino (Italy)--Maps.
Harvard subject headings:
City planning--Italy--Piombino.
City planning--Italy--Val di Cornia.
Piombino (Italy)--Description and travel.
Val di Cornia (Italy)--Description and travel.
Princeton subject headings:
Architecture--Italy--Cornia River Valley.
Architecture--Italy--Piombino.
City planning--Italy--Piombino.
Piombino (Italy)--Buildings, structures, etc.
Regional planning--Italy--Cornia River Valley.