Columbia subject headings:
Harvard subject headings:
France--Relations--Poland--Congresses.
Germany--Relations--Poland--Congresses.
Poland--Relations--France--Congresses.
Poland--Relations--Germany--Congresses
Weimar Triangle--Congresses.
Princeton subject headings:
France--Relations--Poland--Congresses.
Germany--Relations--Poland--Congresses.
Poland--Relations--France--Congresses.
Poland--Relations--Germany--Congresses.
Weimar Triangle--Congresses.