Columbia subject headings:
Harvard subject headings:
Polish people--Italy--History.
Travelers--Italy--History.
Visitors, Foreign--Italy--History.
Princeton subject headings:
Italy--Description and travel--Congresses.
Italy--Foreign public opinion, Polish--Congresses.
Italy--Relations--Poland--Congresses.
Poland--Relations--Italy--Congresses.
Polish people--Travel--Italy--History--Congresses.
Travelers--Polish--History--Congresses.