Columbia subject headings:
Socialism--Italy--Varese--Periodicals--Bibliography.
Working class--Italy--Varese--Periodicals--Bibliography.
Harvard subject headings:
Socialism--Italy--Varese--Periodicals--Bibliography.
Working class--Italy--Varese--Periodicals--Bibliography.
Princeton subject headings:
Labor movement--Italy--Varese--Periodicals--Bibliography.
Socialism--Italy--Varese--Periodicals--Bibliography.