Columbia subject headings:
Architecture--Italy--Pontine Marshes--History.
Regional planning--Italy--Pontine Marshes--History.
Harvard subject headings:
Architecture--Italy--Pontine Marshes--Designs and plans.
Architecture--Italy--Pontine Marshes--History.
City planning--Italy--Pontine Marshes--History.
Landscape assessment--Italy--Pontine Marshes--History.
Pontine Marshes (Italy)--Historical geography.
Regional planning--Italy--Pontine Marshes--History.
Princeton subject headings: