Columbia subject headings:
Archivio centrale dello Stato (Italy)--Catalogs.
Italian periodicals--Bibliography--Catalogs.
Italy--Politics and government--1870-1914--Periodicals--Bibliography--Catalogs.
Italy--Politics and government--1914-1945--Periodicals--Bibliography--Catalogs.
Italy. Direzione generale della pubblica sicurezza--Catalogs.
Subversive activities--Italy--History--19th century--Periodicals--Bibliography--Catalogs.
Subversive activities--Italy--History--20th century--Periodicals--Bibliography--Catalogs.
Harvard subject headings:
Archivio centrale dello Stato (Italy)--Catalogs.
Italian periodicals--Bibliography--Catalogs.
Italy--Politics and government--1870-1914--Periodicals--Bibliography--Catalogs.
Italy--Politics and government--1914-1945--Periodicals--Bibliography--Catalogs.
Italy. Direzione generale della pubblica sicurezza--Catalogs.
Subversive activities--Italy--History--19th century--Periodicals--Bibliography--Catalogs.
Subversive activities--Italy--History--20th century--Periodicals--Bibliography--Catalogs.
Princeton subject headings:
Archivio centrale dello Stato (Italy)--Catalogs.
Italy. Direzione generale della pubblica sicurezza--Archives--Catalogs.
Subversive activities--Italy--History--Sources--Bibliography--Catalogs.