Columbia subject headings:
Architecture--Competitions--Italy--Artena.
Architecture--Italy--Artena--Designs and plans.
City planning--Competitions--Italy--Artena.
Harvard subject headings:
Architecture--Competitions--Italy--21st century--Artena.
Architecture--Italy--Artena--21st century--Designs and plans.
City planning--Competitions--Italy--Artena.
Princeton subject headings: