Columbia subject headings:
City planning--Italy--Carbonia--Congresses.
Urban landscape architecture--Italy--Carbonia--Congresses.
Harvard subject headings:
City planning--Italy--Carbonia--Congresses.
Urban landscape architecture--Italy--Carbonia--Congresses.
Princeton subject headings:
City planning--Italy--Carbonia--Congresses.
Urban landscape architecture--Italy--Carbonia--Congresses.