Columbia subject headings:
Nautical charts--Italy--Bibliography--Catalogs.
Harvard subject headings:
Cartography--Italy--Emilia-Romagna--Catalogs.
Nautical charts--Italy--Bibliography--Catalogs.
Nautical charts--Italy--Emilia-Romagna--Bibliography--Catalogs.
Princeton subject headings:
Catalogs.
Nautical charts--Italy--Bibliography--Catalogs.