Columbia subject headings:
Architecture--Competitions--Italy.
Architecture--Italy--Cagliari--History--20th century--Designs and plans.
Cagliari (Italy)--Buildings, structures, etc.
City planning--Italy--Cagliari.
Plazas--Italy--Cagliari.
Harvard subject headings:
Architecture, Modern--20th century--Italy--Cagliari--Designs and plans.
Architecture--Competitions--Italy.
Castello (Cagliari, Italy)--Buildings, structures, etc.
City planning--Italy--Cagliari.
Plazas--Italy--Cagliari.
Princeton subject headings:
Architecture, Modern--20th century--Italy--Cagliari (Sardinia)--Designs and plans.
Architecture--Competitions--Italy.
Cagliari (Italy)--Buildings, structures, etc.
City planning--Italy--Cagliari (Sardinia).
Plazas--Italy--Cagliari (Sardinia).