Columbia subject headings:
Harbors--Congresses.
Palermo (Italy)--Congresses.
Harvard subject headings:
City planning
City planning--Exhibitions
City planning--Italy, Southern--Exhibitions.
Urban renewal.
Waterfronts--Exhibitions.
Waterfronts--Italy, Southern--Exhibitions.
Waterfronts--Italy.
Waterfronts.
Princeton subject headings:
City planning--Exhibitions.
City planning--Italy, Southern--Exhibitions.
Waterfronts--Exhibitions.
Waterfronts--Italy, Southern--Exhibitions.