Columbia subject headings:
Harbors--Italy--Trieste--History.
Trieste (Italy)--Description and travel.
Trieste (Italy)--History.
Trieste (Italy)--Pictorial works.
Harvard subject headings:
Harbors--Italy--Trieste--History.
Trieste (Italy)--Description and travel.
Trieste (Italy)--History.
Princeton subject headings:
Harbors--Italy--Trieste--History.
Trieste (Italy)--Description and travel.
Trieste (Italy)--History.