Columbia subject headings:
Harvard subject headings:
Damasus II, Pope, -1048.
Drainage--Italy--Marano Lagoon Region.
Land use--Italy--Marano Lagoon Region.
Marano Lagoon Region (Italy)--Economic conditions.
Marano Lagoon Region (Italy)--History.
Marshes--Italy--Marano Lagoon Region.
Princeton subject headings:
Damasus II, Pope, -1048.
Drainage--Italy--Marano Lagoon Region.
Land use--Italy--Marano Lagoon region.
Marano Lagoon Region (Italy)--Economic conditions.
Marano Lagoon Region (Italy)--History.
Marshes--Italy--Marano Lagoon Region.