Columbia subject headings:
Artisans--Italy--Rome--Social conditions.
Professions--Italy--Rome--Social conditions.
Working class--Italy--Rome--History.
Working class--Italy--Rome--Social conditions.
Harvard subject headings:
Artisans--Italy--Rome--Social conditions.
Professions--Italy--Rome--Social conditions.
Rome (Italy)--Economic conditions.
Rome (Italy)--History--476-1420.
Working class--Italy--Rome--Social conditions.
Princeton subject headings:
Artisans--Italy--Rome--History.
Occupations--Italy--Rome--History.
Working class--Italy--Rome--History.