Columbia subject headings:
Italian periodicals--Congresses.
Newspaper and periodical libraries--Italy--Congresses.
Newspapers--Conservation and restoration--Congresses.
Periodicals in microform--Congresses.
Periodicals--Bibliography--Methodology--Congresses.
Serials control systems--Congresses.
Harvard subject headings:
Italian periodicals--Congresses.
Newspaper and periodical libraries--Italy--Congresses.
Newspapers--Conservation and restoration--Congresses.
Periodicals in microform--Congresses.
Periodicals--Bibliography--Methodology--Congresses.
Serials control systems--Congresses.
Serials librarianship--Congresses.
Princeton subject headings: