Columbia subject headings:
Archivio centrale dello Stato (Italy)--Catalogs.
Italy--History--20th century--Bibliography--Catalogs.
Italy--History--Archival resources--Italy--Rome.
Harvard subject headings:
Archivio centrale dello Stato (Italy)--Catalogs.
Italy--History--20th century--Bibliography--Catalogs.
Italy--History--Archival resources--Italy--Rome.
Princeton subject headings:
Archivio centrale dello Stato (Italy)--Catalogs.
Italy--History--20th century--Bibliography--Catalogs.
Italy--History--Archival resources--Italy--Rome.