Columbia subject headings:
Italy--Bibliography.
Italy--Relations--Poland--Bibliography.
Poland--Bibliography.
Poland--Relations--Italy--Bibliography.
Harvard subject headings:
Italy--Bibliography.
Italy--Relations--Poland--Bibliography.
Poland--Bibliography.
Poland--Relations--Italy--Bibliography.
Princeton subject headings:
Italy--Bibliography.
Italy--Relations--Poland--Bibliography.
Poland--Bibliography.
Poland--Relations--Italy--Bibliography.