Columbia subject headings:
Architecture--Italy--Ravenna--History--20th century--Designs and plans.
Architecture--Italy--Ravenna--History--21st century--Designs and plans.
Docks--Italy--Ravenna--Designs and plans.
Waterfronts--Italy--Ravenna--Designs and plans.
Harvard subject headings:
Architecture--Italy--Ravenna--20th century--Designs and plans.
Architecture--Italy--Ravenna--21st century--Designs and plans.
Docks--Italy--Ravenna--Designs and plans.
Waterfronts--Italy--Ravenna--Designs and plans.
Princeton subject headings: