Columbia subject headings:
Italy--Foreign economic relations--Poland.
Italy--Foreign relations--Poland.
Poland--Foreign economic relations--Italy.
Poland--Foreign relations--Italy.
Harvard subject headings:
Italy--Foreign economic relations--Poland.
Italy--Foreign relations--Poland.
Merchants--Italy--History.
Poland--Foreign economic relations--Italy.
Poland--Foreign relations--Italy.
Princeton subject headings:
Italy--Foreign economic relations--Poland.
Italy--Foreign relations--Poland.
Poland--Foreign economic relations--Italy.
Poland--Foreign relations--Italy.